the muscle loss conversation no one is having about GLP-1 supplements
GLP-1 medications are rapidly changing the weight loss landscape. Many people are experiencing reduced appetite, quieter food noise, and faster weight loss than they ever thought possible.
Because of that, these medications are getting a lot of attention right now.
But there’s an important conversation happening in the research world that almost no one is talking about publicly: muscle loss.
When people lose weight, they don’t just lose fat. A portion of that weight often comes from lean tissue, which includes muscle. And the amount of muscle loss during weight loss can dramatically influence metabolism, strength, long-term health, and how sustainable those results actually are.
So today, I want to unpack what’s really happening here. We’ll talk about how GLP-1 supplements influence weight loss, why the rate of weight loss matters, and why strength training for fat loss becomes even more important if your goal is to lose fat while protecting your metabolism and muscle.
Because ultimately, the goal isn’t just to become smaller. The goal is to become leaner, stronger, and healthier for the long term.
scale weight vs body composition
One of the most important concepts in this conversation is the difference between scale weight and body composition.
The scale only tells you how much mass your body is carrying at a single moment in time. It doesn’t tell you what that mass is made of.
When people lose weight, they almost always lose a combination of fat and lean tissue. That means the scale might go down, but the composition of that weight loss can vary significantly.
Imagine two people each lose 30 pounds.
One person loses mostly fat while preserving most of their muscle. The other loses a larger proportion of muscle along with fat. On the scale, those outcomes look identical. But metabolically, they are very different.
Preserving muscle helps support metabolism, strength, energy levels, and long-term weight maintenance. That’s why muscle loss during weight loss is such an important part of the conversation.
The goal isn’t just weight loss. The goal is high-quality weight loss.
what GLP-1 supplements actually do
To understand why muscle becomes part of this conversation, it helps to understand what GLP-1 supplements actually do.
GLP-1 stands for glucagon-like peptide-1, a hormone your body naturally releases in response to food. This hormone helps regulate appetite, digestion, and blood sugar.
The medications currently getting attention, like semaglutide and tirzepatide, mimic this hormone’s effects. As a result, GLP-1 supplements can:
- slow gastric emptying
- increase feelings of fullness
- suppress appetite
- improve blood sugar regulation
Many people also describe a reduction in “food noise,” or the constant mental chatter around food.
Because appetite decreases and satiety increases, many people naturally eat fewer calories. That’s what leads to weight loss.
But there’s an important nuance here.
These medications influence how much people eat. They do not automatically improve the structure of someone’s nutrition or how their meals are built.
And this is where the risk of muscle loss during weight loss can begin to increase.s
why muscle loss during weight loss happens
Any time someone loses weight quickly, there’s potential for muscle loss.
That’s not unique to GLP-1 supplements. It happens with traditional dieting, bariatric surgery, and aggressive calorie restriction as well.
Research examining body composition during weight loss suggests that approximately 25–40% of weight lost can come from lean mass, depending on lifestyle factors.
That means when someone loses 20 pounds, a portion of that may come from muscle if the right signals aren’t present.
The body requires signals to determine which tissue to keep and which tissue to lose.
The two strongest signals for preserving muscle are:
- adequate protein intake
- resistance training
Without those signals, the body may break down both fat and muscle for energy during weight loss.
why the rate of weight loss matters
Another factor that strongly influences muscle loss during weight loss is the speed at which weight is lost.
Research consistently shows that faster weight loss increases the likelihood of losing lean tissue.
When weight loss happens very quickly, the body is operating in a large calorie deficit. In that environment, it’s easier for the body to break down muscle alongside fat.
When weight loss happens more gradually, the body tends to preserve more lean mass.
This is why many evidence-based guidelines recommend losing about 0.5–1% of body weight per week.
For someone using GLP-1 supplements, appetite suppression can sometimes create a very large calorie deficit unintentionally. That’s why paying attention to nutrition and training becomes even more important.
Sometimes, slowing the pace slightly can improve the quality of the results by reducing muscle loss.
why strength training for fat loss matters
One of the most powerful tools for protecting muscle is resistance training.
Strength training for fat loss sends a clear signal to the body that muscle tissue is still needed.
Muscle is metabolically expensive to maintain. When calorie intake drops, the body constantly evaluates which tissues it needs to keep.
If muscles are regularly challenged through training, the body receives the signal that those muscles are required.
Without that signal, especially when calories are low, the body may become more willing to break down muscle tissue.
This is why strength training for fat loss becomes so important during any weight loss phase.
Compound exercises like squats, deadlifts, rows, presses, and lunges recruit large muscle groups and help stimulate the muscle tissue that supports strength and metabolism.
Even maintaining your strength in the gym during weight loss can be a strong indicator that you’re preserving muscle.
why muscle matters more as we age
This conversation becomes even more important during midlife.
There’s a natural process called sarcopenia, which refers to the gradual loss of muscle mass that occurs with aging.
Without intervention, adults can lose approximately 3–8% of their muscle mass per decade starting around age 30 to 40.
Muscle is not just about aesthetics. It plays a major role in:
- metabolism
- blood sugar regulation
- bone density
- balance and mobility
- long-term independence
Higher levels of muscle strength have also been associated with lower mortality risk and better long-term health outcomes.
That’s why reducing unnecessary muscle loss during weight loss becomes especially important in midlife.
the real goal of weight loss
GLP-1 medications can absolutely be powerful tools.
For many people, GLP-1 supplements reduce food noise, improve blood sugar regulation, and make weight loss more achievable.
But the goal isn’t simply appetite suppression.
The real goal is:
- fat loss rather than just scale weight
- preserving muscle mass
- supporting metabolic health
- building habits that make results sustainable
Medication can influence appetite, but the quality of weight loss is still largely determined by lifestyle factors.
Protein intake, strength training for fat loss, balanced meals, and a sustainable rate of weight loss are what ultimately shape the outcome.
Because at the end of the day, it’s not just about how quickly the weight comes off.
It’s about what your body looks and feels like once it does.
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RESOURCES MENTIONED IN THIS EPISODE:
[00:00:00] Emily Field: Welcome back to Macros Made Easy. I’m your host, Emily Field, registered dietician and strength coach, and today we’re diving into a topic that is becoming impossible to ignore in the health and weight loss conversation. GLP one, medications are rapidly changing the weight loss landscape For many people, these medications can reduce appetite, quiet food, noise, and make it easier to eat less.
[00:00:24] Emily Field: As a result, people are often seeing noticeable weight loss most times faster than they ever thought before. And because of that, these medications are getting a lot of attention right now. But there’s a conversation happening quietly inside the research world that almost no one is talking about in the mainstream discussion, and that’s the conversation about muscle.
[00:00:44] Emily Field: When people lose weight, whether it’s through dieting, medication, or even surgery, they don’t just lose fat. They lose a mixture of fat and lean tissue, which includes muscle mass. And the ratio of fat to muscle lost matters a lot. Two people can lose the exact same amount of weight on the scale, but have very different outcomes depending on how much muscle they preserved along the way.
[00:01:09] Emily Field: Now, before we go any further, I wanna say something to those of you listening who are not on a GLP one medication and may never plan to be. You might be wondering why this conversation matters to you. And the truth is, the concepts we’re talking about today apply to any kind of weight loss, whether that’s weight loss that happens through dieting, lifestyle change, medication, or surgery.
[00:01:30] Emily Field: The body follows many of the same physiological rules. Understanding those rules can actually be incredibly reassuring, especially if you’ve ever felt like your progress is slower than someone else’s. Because in many cases, slower progress is not a disadvantage. It may actually be protecting something incredibly important, your muscle mass and your metabolism.
[00:01:52] Emily Field: So today we’re gonna unpack this conversation in a very practical way. We’ll talk through why muscle loss matters during weight loss. What research shows about GLP one medications and body composition. Why the rate of weight loss plays a major role in how much muscle is lost versus fat, and why strength training becomes even more important during periods of weight loss and what to focus on if your goal is to lose fat while protecting your metabolism, strength, and long-term health.
[00:02:20] Emily Field: Because ultimately, the goal isn’t just to become smaller, the goal is to become leaner, stronger, and healthier for the long term. Before we get too far into the GLP one conversation, we need to talk about an important concept that applies to any kind of weight loss, and that’s the difference between scale, weight, and body composition.
[00:02:39] Emily Field: The scale only tells you how much mass your body is carrying, how much gravity is on your body at that one point in time that you measure. It doesn’t tell you what that mass is made of When people lose weight. They don’t just lose fat. Weight loss almost always includes a mixture of fat and lean tissue, which includes muscle and the ratio of fat to muscle loss matters a lot.
[00:03:03] Emily Field: So lemme give you an example. Imagine two people each lose 30 pounds. Person A loses 20 pounds of fat and 10 pounds of muscle. Person B loses 27 pounds of fat and three pounds of muscle. On the scale, those two outcomes look identical. Both people lost 30 pounds, but metabolically they are very different outcomes.
[00:03:26] Emily Field: Person B preserved much more muscle, which means that they’re more likely to maintain their strength, maintain their metabolic rate. That’s like how many calories they burn all the time, how many calories they burn at rest and maintain their results long term. And that’s really what this conversation is about.
[00:03:43] Emily Field: Losing mostly fat is objectively better than losing mostly muscle. Muscle tissue plays an important role in metabolism, blood sugar, regulation, strength, and overall physical function. Preserving that muscle while losing fat creates a much more favorable outcome. This matters, especially when we think about long-term results.
[00:04:05] Emily Field: No one starts a GLP one medication, excited to be on it for the rest of their life. And similarly, no one begins a fat loss journey hoping they’ll need to repeat the process again in a few years. And most people wanna lose weight once and then maintain those results. So if long-term maintenance is the goal, then the quality of the weight loss matters just as much as the quantity.
[00:04:28] Emily Field: This is where body composition becomes the more meaningful lens. Most listeners of this podcast aren’t just chasing a smaller number on the scale. They care about things like being strong in the gym and having consistent energy supporting their metabolism and aging well over time. And when those are the goals, the focus shifts.
[00:04:49] Emily Field: The goal is not simply smaller. The goal is becoming leaner, stronger, and metabolically healthier. Okay. To understand why muscle loss is part of this conversation, it helps to understand what GLP one medications actually do in the body. GLP one stands for glucagon-like Peptide one, which is a hormone your body naturally produces in response to food.
[00:05:11] Emily Field: It plays a role in regulating your appetite, digestion, and your blood sugar. The medications that are getting so much attention right now, like Glide or tirzepatide, are GLP one receptor agonists, meaning they mimic or amplify the actions of this hormone. These medications are working through several mechanism.
[00:05:31] Emily Field: They slow gastric emptying, which means that food leaves the stomach more slowly. They increase feelings of satiety, helping people feel full sooner. They suppress appetite, making it easier to eat less without feeling deprived, and they improve blood sugar regulation, which is one reason they were originally developed for diabetes treatment.
[00:05:51] Emily Field: And one of the things many people describe subjectively is that they reduce food noise, that constant mental chatter about food cravings and eating. Because of these combined effects, these medications are very effective for weight loss. Simply put, when appetite decreases in satiety increases, most people naturally consume fewer calories and weight loss follows.
[00:06:14] Emily Field: In the major clinical trials for Glide and Tirzepatide participants experienced average weight losses in the range of 15 to 22% of body weight, which is quite significant compared to traditional lifestyle interventions alone. But there’s an important nuance that often gets missed. GLP one. Medications change how much people eat.
[00:06:34] Emily Field: They do not automatically improve what people eat. In most of the large clinical trials, participants were allowed to eat ad lido, meaning they could eat freely according to their appetite. The studies were designed to measure weight loss, not to prescribe a specific nutrition strategy. So while appetite is lower, the medication itself doesn’t teach someone how to structure their meals, prioritize protein or fuel their training, and that’s where some of the more interesting patterns start to show up.
[00:07:03] Emily Field: Clinically and anecdotally, many people report experiences like skipping meals because they simply aren’t hungry. Grazing on small snack foods instead of eating full meals, relying heavily on convenience foods or protein bars, unintentionally consuming very little protein, eating very small portions throughout the day, or noticing that workouts suddenly feel harder because overall energy intake has dropped.
[00:07:28] Emily Field: None of these patterns mean someone is doing it wrong. They are simply a very normal consequence of appetite suppression, but this is also the point where muscle loss risk can begin to increase because when calorie intake drops significantly, especially if protein intake and resistance training are not intentionally maintained, the body may begin pulling from both fat stores and lean tissue during weight loss.
[00:07:54] Emily Field: And we’ve actually seen signals of this in the research in body composition analysis from GLP one trials using DEXA scans. Researchers have observed that roughly 25 to 40% of total weight loss can come from lean mass, depending on the study and the measurement method. Now it’s important to be precise here.
[00:08:14] Emily Field: This does not mean that the medication is directly causing muscle loss. Any significant weight loss, whether that happens through dieting medication, or bariatric surgery, typically includes some lean mass reduction. So for example, in bariatric surgery research, rapid weight loss after procedure like gastric bypass, has also been associated with substantial lean muscle mass losses, particularly when protein intake and resistance training are not prioritized.
[00:08:44] Emily Field: That’s why post-surgery nutrition guidelines strongly emphasize high protein intake and strength training as part of the recovery and long-term weight maintenance. The underlying physiology is very similar here. Whenever weight loss is rapid and calorie intake drops significantly, the body requires signals to determine which tissue to keep and which tissue to lose.
[00:09:08] Emily Field: And without those signals, primarily adequate protein and resistance training, the body may shed more muscle than we’d ideally like. This doesn’t mean that GLP one medications are a bad tool, but it does mean that nutrition strategy and training habits become especially important if the goal is to lose mostly fat while preserving muscle.
[00:09:29] Emily Field: Another important factor in this conversation is how quickly weight loss occurs. When researchers study weight loss across many different approaches like traditional dieting, lifestyle interventions, medical assisted weight loss, or even bariatric surgery, one pattern shows up consistently. The faster the weight is lost, the greater the proportion of lean mass that tends to be lost along with it.
[00:09:53] Emily Field: In other words, when weight loss happens very rapidly, the body is more likely to break down both fat and muscle for energy. When weight loss happens more gradually, the body tends to preserve more lean tissue and pull a larger percentage of that weight loss from fat stores instead. This is why many evidence-based guidelines for fat loss recommend a pace that is relatively moderate rather than aggressive.
[00:10:18] Emily Field: A very commonly suggested rate is about 0.5 to 1% of body weight lost per week. So to put that into perspective, someone who weighs 180 pounds might aim to lose roughly one to 1.8 pounds per week on average. That rate of progress tends to support a better balance between fat loss and muscle preservation, especially when combined with adequate protein intake and strength training.
[00:10:42] Emily Field: Now here’s where the GLP one medications add an interesting wrinkle to this conversation. Because these medications suppress appetite so effectively, some people unintentionally create a very large calorie deficit. They may simply not feel hungry enough to eat much at all. And when that happens, weight loss can accelerate beyond the typical recommended pace.
[00:11:03] Emily Field: And at first, that can feel incredibly exciting. Seeing the scale move down quickly can feel validating, especially for someone who has struggled with weight for a very long time. But when weight loss happens very rapidly, the importance of muscle preservation becomes even greater. This is because the body is operating in a much larger energy deficit, and without enough protein intake or resistance training, it becomes easier for the body to break down lean tissue along with fat tissue, and this leads to an important reframe.
[00:11:34] Emily Field: Sometimes slowing the rate of weight loss slightly can actually improve the quality of the results. A more moderate pace of fat loss can help preserve muscle mass support better training performance, maintain metabolic health, and ultimately make long-term weight maintenance a lot easier. Because again, the goal is not simply to lose weight as quickly as possible.
[00:11:58] Emily Field: The goal is to lose primarily fat while preserving the muscle that supports your strength, metabolism, and long-term health. Before we move on, I want to take a moment to directly speak to those of you listening who are not using a GLP one medication and may never plan to, because I know this current landscape can feel a little confusing and if I’m being honest, sometimes a little discouraging.
[00:12:20] Emily Field: You might be watching people around you lose weight super quickly. Maybe it’s a friend, a family member, or someone at your gym. Maybe you’re hearing things like, I’ve already lost 20 pounds, or the weight is just falling off. And if you’ve been working on your nutrition, showing up to your workouts, prioritizing protein, trying to be consistent, it can start to feel like you’re doing all of the right things, but moving much more slowly and it can feel like you’re behind.
[00:12:45] Emily Field: But that’s what I want you to really understand here. Slow weight loss is not a disadvantage, and in many cases it’s actually more favorable for body composition in long-term maintenance. When weight loss happens gradually, especially when it’s paired with strength training and adequate protein intake, the body is more likely to lose a greater proportion of fat while preserving more muscle, and that matters.
[00:13:09] Emily Field: Yeah, because muscle is what supports your metabolism, your strength, your energy, and your ability to maintain your results long term. Gradual weight loss also tends to come with higher energy levels, which means you can continue to train effectively, recover well, and stay consistent with your workouts.
[00:13:27] Emily Field: It often leads to better progress in the gym, whether that’s getting stronger, improving your technique, or simply feeling more capable in your body, and maybe most importantly, it’s. Slower weight loss allows you to build skills and habits along the way. You’re learning how to structure balanced meals, prioritize protein, navigate hunger and fullness.
[00:13:48] Emily Field: Stay consistent with training, manage your schedule, stress and recovery. Those are things that actually make results stick, because the truth is the hardest part of weight loss is not the losing of the weight. The hardest part is maintaining it later. And when weight loss happens slowly through lifestyle changes, you’re building the infrastructure that makes maintenance possible.
[00:14:10] Emily Field: So if your progress feels slower than the people around you, that doesn’t mean that you’re doing something wrong. In many cases, it means that you’re doing something very right. You’re building a foundation that supports not just short-term results, but long-term strength, health, and sustainability.
[00:14:26] Emily Field: There’s another dynamic that I’m starting to see a little bit more often as GLP one medications become more common and it has less to do with physiology and more to do with human behavior. For many people, the primary reason they ever started to go to the gym in the first place was weight loss. The gym becomes a tool for burning calories, a place to sweat.
[00:14:47] Emily Field: A place to earn food, a place to try to make the scale move. And when weight loss finally starts happening through another mechanism like appetite suppression from a medication, something interesting can happen. The motivation to go to the gym can start to fade because if the scale is already moving, people start to wonder, do I really need to work out as much?
[00:15:09] Emily Field: Is the gym still necessary? The medication is working, so why push it? And that’s where a trap can form. Because physiologically speaking, weight loss happening without resistance training significantly increases the risk of muscle loss. Strength training sends a very important signal to the body during periods of weight loss.
[00:15:29] Emily Field: It tells the body this tissue is still needed. Muscle is metabolically expensive for the body to maintain. It requires energy and resources so when calorie intake drops significantly as it does during weight loss. The body is constantly making decisions about which tissue to keep and which tissue it can afford to lose.
[00:15:50] Emily Field: Strength training helps tip that decision. When you’re consistently challenging your muscles, the body receives a clear message that those muscles are still required for daily function and performance. And without that signal, especially when calories are low, the body becomes much more willing to break down muscle tissue along with fat tissue.
[00:16:10] Emily Field: But there’s another layer to this conversation that I think is equally important. If the only reason someone ever went to the gym was to lose weight, that relationship with exercise can become pretty fragile because the moment weight loss happens through another pathway, the motivation disappears. And in my opinion, that’s actually a really good opportunity to rethink what the gym means.
[00:16:32] Emily Field: The gym can be so many things beyond a calorie burning tool. For many people, it becomes a place to connect with friends, a social environment and community. A third space outside of work and home, an adult playground where you get to move your body and challenge yourself. A place where you can prove yourself wrong in a very positive way.
[00:16:53] Emily Field: A place where you build strength, confidence, and resilience. It can become a place where you discover what your body is capable of, not just what it weighs. And interestingly, this becomes very clear for some people. Once weight loss is no longer the primary driver. If someone starts a GLP one medication and finds themselves drifting away from the gym, it can be a powerful signal that their relationship with exercise was tied almost entirely to weight loss.
[00:17:20] Emily Field: And this is the moment where it’s worth building a new motivation. Not I need to burn calories, but I wanna get stronger. I want to feel capable. I wanna move well as I age. I want a place where I can challenge myself and feel proud of what my body can do. Because the gym when used well becomes less about chasing a smaller body and more about building a stronger one.
[00:17:43] Emily Field: And when weight loss is happening, whether through lifestyle changes or medication, that strength training becomes one of the most powerful tools we have to protect the muscle that supports our metabolism, movement, and long-term health. Another reason this conversation matters so much, especially for the audience of this podcast, is that muscle naturally changes as we age.
[00:18:05] Emily Field: There’s a process called sarcopenia, which refers to the gradual loss of muscle mass and strength that occurs over time. This process doesn’t suddenly appear later in life. It actually begins earlier than most people realize. Starting around age 30 to 40 adults begin to lose muscle mass slowly if they’re not actively doing something to maintain it.
[00:18:26] Emily Field: Research suggests that without intervention, adults roughly lose about three to 8% of their muscle mass per decade, and that rate of weight loss tends to accelerate after age 60, especially if someone is sedentary or not engaging in resistance training. Now muscle loss is often talked about in aesthetic terms.
[00:18:45] Emily Field: People might notice changes in muscle tone or definition or strength, but the consequences extend far beyond appearance. Muscle tissue plays a critical role in many aspects of long-term health. Muscle supports your metabolism because it is metabolically active tissue and contributes to overall energy expenditure.
[00:19:04] Emily Field: It plays a key role in blood sugar regulation, helping the body absorb and utilize glucose more effectively and supports insulin sensitivity. Muscle also supports bone density because resistance training stimulates the bones and helps maintain skeletal strength as we age. It contributes to mobility and fall prevention, allowing people to move confidently, react quickly, and maintain balance.
[00:19:27] Emily Field: And perhaps most importantly, it supports independence later in life. The ability to get up from the floor, climb stairs, carry groceries, and continue participating in everyday activities. There’s also a growing body of research showing that muscle strength is associated with longevity. In fact, studies have consistently found that people with higher levels of strength tend to have lower risk of mortality and better long-term health outcomes, even when other health factors are taken into account.
[00:19:55] Emily Field: All of this makes muscle preservation incredibly important as we move through midlife. For many midlife women this. Stage of life already includes hormonal shifts, changes to metabolism, and increased concern about bone density and long-term health. That means that the muscles someone has in their forties and fifties becomes a very important foundation for the decades that follow, which is why when weight loss centers the picture, whether through lifestyle changes or medications like GLP ones, protecting muscle becomes even more important.
[00:20:26] Emily Field: Again, the goal isn’t simply to become. Smaller. The goal is to maintain the strength, function and resilience that allows you to age well and stay capable for the long run. If the goal is not just weight loss, but high quality weight loss, meaning more fat loss and less muscle loss, then we have to approach it intentionally.
[00:20:47] Emily Field: The research points to three major strategies, fuel the body with enough protein, challenge the body with strength training, and make sure the pace of weight loss is something your body can actually support, because together those are the signals that tell your body to keep the muscle. So let’s get into those three strategies and adequate protein intake is the first one.
[00:21:09] Emily Field: During weight loss, protein needs actually increase, not decrease. This is because protein helps preserve lean muscle tissue when the body is operating in a calorie deficit. Most research on fat loss and muscle preservation suggests a target somewhere around 1.6 to 2.4 grams of protein per kilogram of body weight.
[00:21:28] Emily Field: And for the, those of us who work in pounds, that’s about 0.7 0.8 to 1.1 grams per pound of body weight. And typically this works out to be about 25 to 30% of your total calories per day coming from protein. Just as important as total daily intake is how protein is distributed across the day. Rather than eating most of your protein in one meal, spreading it out tends to support muscle protein synthesis a lot more effectively.
[00:21:58] Emily Field: So a good rule of thumb is aiming for about 25 to 40 grams of protein per meal. Now for someone using a GLP one medication, this becomes especially important because appetite may be lower and meals may be smaller, and in most of those cases, focusing on low volume, high protein foods can make it easier to reach those targets without feeling overly full.
[00:22:20] Emily Field: Here are some examples of what 25 to 40 grams of protein might look like in some real meals. One scoop of whey protein isolate in a shake. One scoop of whey protein isolate, and one cup of milk, one cup of Greek yogurt, 2% or non-fat. That’s gonna provide 20 grams of protein, maybe Greek yogurt, and a scoop of collagen or protein powder mixed in.
[00:22:42] Emily Field: That’s gonna boost up to 35 grams of protein, one cup of cottage cheese, five ounces of chicken breasts, five ounces of salmon, four to five ounces of lean ground beef. One can of tuna, three eggs, plus three fourths of a cup of egg whites. For someone with lower appetite, meals might look like Greek yogurt plus protein powder, whey protein shake with a small piece of fruit, cottage cheese and smoked salmon, a small chicken breast with roasted vegetables, eggs, and egg whites with avocado.
[00:23:14] Emily Field: The goal is not necessarily large meals here, but efficient protein intake. And when appetite is suppressed, protein often becomes the first nutrient people unintentionally undereat, which is exactly the opposite of what helps protect muscle during weight loss. Now the second major piece of preserving muscle mass is strength training.
[00:23:34] Emily Field: Specifically strength training that incorporates progressive overload. Progressive overload simply means gradually increasing the demands placed on the muscles over time, and this can happen in several ways. This can happen through increasing the weight that you lift. Performing more reps, adding more sets, improving range of motion, improving control, tempo or technique.
[00:23:56] Emily Field: And these small increases tell the body that the muscle is still needed and without that signal, especially when calories are lower, the body becomes much more willing to break down muscle tissue. When people think about exercise for weight loss, they often default to cardio. And cardio can absolutely be beneficial for cardiovascular health, but when the goal is building or preserving muscle resistance training is far more effective.
[00:24:22] Emily Field: Some of the most effective strength training exercises for building and maintaining muscle are compound movements that work multiple muscle groups at once. So here are some examples. Lower body compound movements or compound lifts might include squats like back squat, front squat, goblet squat, dead lifts, either conventional Romanian or trap bar lunges, or split squats, hip thrust, or glute bridges.
[00:24:49] Emily Field: Some of our upper body compound lifts include bench press or dumbbell brunch press. Overhead press pull-ups or lap pull downs, rows either with barbell, dumbbell, or cables. These exercises recruit large muscle groups and provide the kind of stimulus that encourages muscle preservation and growth. For many people.
[00:25:10] Emily Field: Two to four strength training sessions per week built around these movements can make a meaningful difference. And here’s an important point. During weight loss, even maintaining your strength levels can be a positive sign that you’re preserving muscle. So again, the combination of adequate protein intake and progressive strength training gives the body two powerful signals, fuel the muscle and keep the muscle.
[00:25:36] Emily Field: Now one question people often have when they start prioritizing strength training is, how do I know if I’m actually making progress? And this is where it helps to expand what we mean by progress, because it doesn’t always look dramatic In social media, fitness, culture, progress is often portrayed as huge jumps in weight lifted or dramatic physical transformations.
[00:25:59] Emily Field: But in reality, strength, progress, especially during a period of fat loss, often shows up in small. Steady improvements over time. One clear sign of progress is lifting heavier weights than you were previously able to handle. If the dumbbells that once felt challenging, now feel manageable. Or if you’re gradually adding five or 10 pounds to a lift over time, that’s a meaningful indicator that your muscles are adapting.
[00:26:24] Emily Field: Another sign of progress is completing more repetitions with the same amount of weight. Maybe you started out doing six reps of a particular exercise and now you can comfortably complete eight or 10. That’s still progressive overload, even if the weight itself hasn’t changed. Progress can also show up in improved movement quality.
[00:26:42] Emily Field: So early on, an exercise might feel awkward or unstable, and over time your form becomes smoother, more controlled and more confident. Better control and better range of motion are real improvements that indicate your body is getting stronger and more coordinated. You might also notice faster recovery between workouts.
[00:27:00] Emily Field: Movements that once left you extremely sore, may now feel easier to bounce back from. Your muscles adapt. Your nervous system becomes more efficient, and you’re able to train more consistently. And sometimes the most meaningful signs of progress show up outside of the gym. You might find that everyday tasks feel easier, like carrying groceries, lifting something overhead, climbing stairs, getting up from the floor, or simply feeling more capable in your body.
[00:27:26] Emily Field: And that sense of physical competence is a powerful indicator that strength is improving. It’s also important to understand that if you are in a calorie deficit, your expectations around progress should shift slightly. When the body has less energy available, it can be harder to dramatically increase strength.
[00:27:44] Emily Field: So during periods of fat loss, one very positive outcome is simply maintaining your strength levels. If you’re losing weight but still lifting similar weights in the gym, that’s often a strong signal that you are preserving muscle, and that’s exactly what we want. Because the goal during fat loss isn’t just to see the scale move.
[00:28:02] Emily Field: The goal is to maintain the strength and muscle that support your metabolism, your performance, and your long-term health. And that brings me to one more piece of this conversation I think is really important and honestly not talked about enough. If someone is using a GLP one medication, the goal is not to just make appetite disappear as much as possible.
[00:28:22] Emily Field: The goal is not to eat the absolute bare minimum. The goal is not to race to the lowest number on the scale in the shortest amount of time. The goal is to create a rate of weight loss that is effective, but still supportive of muscle retention, adequate nutrition training performance, and day-to-day function.
[00:28:40] Emily Field: Because if we just want this whole episode talking about why muscle matters, why training matters, and why preserving strength matters, then we also have to acknowledge this. If the medication is working in a way that makes it extremely difficult to eat, recover, or function well, that deserves attention.
[00:28:59] Emily Field: I had say the third strategy that we need to talk about today is the appropriate dose, progression, and open communication with your prescriber. These medications are designed to be increased gradually over time, in part to improve tolerance and reduce side effects. But just because a higher dosage exists does not automatically mean it’s the best fit for every person at every stage of this process.
[00:29:22] Emily Field: And I think this is where people sometimes get tripped up. There can be this assumption that if an appetite is lower, that it must be better. If weight loss is faster, that it must be better. If food sounds completely unappealing, that must mean the medication is really working. But from a nutrition and body composition perspective, that is not always a win.
[00:29:42] Emily Field: If someone notices that their appetite is drastically reduced, weight is dropping very quickly. They’re struggling to eat enough protein, feeling weak in the gym, skipping meals unintentionally noticing more fatigue than expected, or seeing things like excessive hair shedding. Those can all be signs that the current plan deserves a conversation with their doctor.
[00:30:04] Emily Field: Because what you’re looking for is not just evidence that the drug is having an effect. You’re looking for a version of that effect that is still compatible with nourishing your body. Well, you should still be able to eat enough protein to support muscle. You should still be able to participate in strength training in a meaningful way.
[00:30:22] Emily Field: You should still feel like you can function in your daily life without feeling completely drained, depleted, or disconnected from your body. And if those things are no longer true, that doesn’t necessarily mean the medication is bad, and it definitely doesn’t mean that someone has failed. It simply means that more is not always better.
[00:30:41] Emily Field: In some cases, slowing the pace of dosage escalation or having a conversation about whether the current dose is appropriate, may better support the bigger goal, and the bigger goal, again, is not just rapid weight loss. It’s losing mostly fat, preserving muscle, maintaining training, and setting yourself up for results that are easier to keep long term because no one starts this process hoping to lose weight in a way that leaves them feeling weaker, under fueled, and harder pressed to maintain the results later.
[00:31:12] Emily Field: The longer term goal is a body that is leaner, stronger, more functional, and easier to maintain. So I think one helpful way to think about this is if the drug is working so aggressively that you can’t nourish yourself, can’t train well, and don’t feel like yourself, that’s not automatically a win. That’s a conversation to be had, and I really want listeners to hear that clearly.
[00:31:36] Emily Field: You do not have to interpret every sign of stronger appetite suppression as a positive. You are allowed to care not just about whether the scale is moving, but about how well your body is functioning while it moves, because the best outcome is not just weight loss. The best outcome is weight loss. That still allows you to feel strong, fueled, capable, and well enough to maintain what you’ve built.
[00:32:01] Emily Field: As we zoom out and look at this whole conversation, I think there’s an important reframe that’s worth making. GLP one medications can absolutely be useful tools for many people, they reduce food noise, improve blood sugar regulation, make it easier to maintain a calorie deficit that previously felt very difficult.
[00:32:20] Emily Field: For someone who has struggled with appetite regulation for years, that shift can feel incredibly freeing. But it’s important to remember that the real goal of this process is not simply appetite suppression. The goal isn’t just to eat less. The real goal is a much bigger set of outcomes. We’re aiming for fat loss, not just weight loss.
[00:32:39] Emily Field: We’re aiming for muscle retention because muscle supports strength, metabolism, and long-term function. We’re aiming for metabolic health, including stable blood sugar, and a resilient metabolism. And we’re aiming for sustainable habits that allow someone to maintain their results over time. Medication can absolutely change appetite, but the quality of the weight loss, how much fat is lost versus how much muscle is preserved, is still largely determined by lifestyle factors.
[00:33:08] Emily Field: Things like adequate protein intake, resistance trading with progressive overload, structured balanced meals, and a pace of weight loss that allows the body to maintain lean tissue. Those are the variables that shape the outcome. A medication can make it easier to eat less, but it doesn’t replace the physiological signals that come from fueling your body well and challenging your muscles consistently.
[00:33:32] Emily Field: And when those pieces are in place, the result isn’t just a smaller body. The result is a body that is stronger, more metabolically resilient and better prepared for long-term health. And this is exactly why I’m hosting a free training in April on this topic, because this conversation is much bigger than what we can cover in a single podcast episode.
[00:33:53] Emily Field: Right now, most conversations about GLP one medications are happening inside medical offices. They focus on dosing prescriptions and the medical management of the drug itself. But almost no one is talking about the day-to-day realities of living well while using these medications, things like how do you structure meals when your appetite is low, how do you make sure you’re getting enough protein?
[00:34:15] Emily Field: When food volume drops, how do you keep your workouts productive when energy intake changes? And how do you build habits that will support you long-term, especially if the medication changes or eventually stops. Those are the conversations we’re gonna be diving into in this training, and the reason I’m excited about this is because I designed this training for three specific groups of people that I see in my work all the time.
[00:34:39] Emily Field: The first group is people who are considering a GLP one medication. You may be trying to decide whether this is the right next step for you. You wanna make an informed decision and understand how these medications actually work, not just medically, but practically. What does life look like on them and what should you be thinking about before you start?
[00:34:59] Emily Field: The second group is people who are already on GLP one medication. Maybe anywhere between a few weeks to a few months in appetite is lower. The scale might be moving, but you’re starting to notice some questions pop up. Things like low energy, difficulty finishing meals, or wondering if your workouts feel different.
[00:35:19] Emily Field: And the third group is people who are thinking ahead and saying, I don’t wanna rely on this forever. You wanna make sure that the weight you lose is something you can maintain, and you wanna build the habits that will support your metabolism and your body long after the medication changes. In the training, we’re gonna walk through a framework for approaching weight loss in a way that protects your muscle, supports your metabolism, and sets you up for long-term success.
[00:35:42] Emily Field: We’ll talk about how to structure meals when appetite is low, how to prioritize protein without feeling overly full. How to protect muscle during weight loss, how to support training performance while in a deficit, and how to build habits that make your results sustainable over time. Because ultimately, the goal isn’t just to lose weight.
[00:36:03] Emily Field: The goal is to build a body that is leaner, stronger, and more resilient for the long term. So if you’re considering a GLP one already using one, or simply trying to understand how these medications fit into long-term metabolic health, this training will give you a much clearer framework for how to navigate that decision and how to support your body along the way.
[00:36:24] Emily Field: I’ll include the link to register in the show notes so you can grab a spot and continue this conversation with me over there. So to bring this all together, GLP one Medications are changing the weight loss conversation in a really powerful way. But no matter how weight loss happens, the same principles still apply.
[00:36:41] Emily Field: The goal isn’t just to lose weight. The goal is to lose mostly fat, preserve your muscle, and build a body that is strong, functional, and sustainable long term. Because at the end of the day, it’s not just about how quickly the weight comes off, it’s about what you’re left with when it does. So whether you’re using a GLP one medication, considering one, or choosing a different path entirely, the focus stays the same.
[00:37:05] Emily Field: Fuel your body, train your body and support your body in a way that helps you keep the results that you worked so hard for. And that’s the version of progress that actually lasts.