At a Glance:

Your GLP-1 is doing its job. Your appetite is down. The weight is moving.

But something feels off. You're getting weaker. You're more tired. Simple things are harder than they used to be.

Here's what's probably happening: you're losing muscle along with fat — and most people on GLP-1s don't catch it until they're already months in.

The good news? This is completely preventable. And if you're ready to start a GLP-1 program with physician support built in, Hims offers physician-supervised weight loss plans — check your eligibility here.

Let's break down the five mistakes we see most often in our community, and exactly what to do about each one.

Most people don't realize that GLP-1s change how your body handles nutrients. Your appetite drops dramatically — but your protein needs actually go up during weight loss.

Think of protein as the security guard for your muscle. Without enough of it, your body can't tell the difference between fat and muscle when it's creating a calorie deficit. It just burns whatever is easiest.

The target: Aim for 0.8–1 gram of protein per pound of your goal body weight, spread throughout the day. If your goal weight is 150 lbs, that's 120–150 grams daily.

A practical move our community swears by: add a protein shake to your morning routine, even when you're not hungry. That steady amino acid supply is what keeps your muscles intact when overall food intake drops.

If you're struggling to hit protein goals while managing GI symptoms, Thorne Whey Protein Isolate is a clean, easy-to-digest option our community uses.

Cardio burns more calories per session. We know. But that's the wrong way to think about it when you're on a GLP-1.

A 2021 analysis published in Obesity Reviews found that resistance training is significantly more effective than cardio at preserving lean mass during calorie-restricted weight loss. Without the signal that comes from lifting, your body is perfectly happy burning through muscle alongside fat.

You don't need a gym. Start with just 20 minutes, three times a week. Squats, push-ups, planks, lunges — bodyweight movements are enough to send the right message to your muscles.

Simple 3-Day At-Home Plan:

Monday: Squats (4x10), Bicep Curls with bands (3x10), Tricep Extensions with bands (3x10)

Wednesday: Push-ups (4x8), Overhead Press with bands (3x10), Calf Raises (3x12)

Friday: Alternating Lunges (3x10 each leg), Seated Row with bands (3x8), Lateral Raises with bands (3x10)

When you're not hungry, it's tempting to just... not eat. But when you combine aggressive calorie restriction with GLP-1s, your body shifts into a kind of emergency mode. It starts breaking down muscle tissue for energy because it's more accessible than stored fat.

You're working against your own results.

The fix isn't eating big meals. It's ensuring you hit your protein and calorie floor even when your appetite is suppressed. Sipping a shake throughout the day is one of the most practical strategies in our community — and it works.

If nausea is making it even harder, replenishing electrolytes can help significantly. Thorne Catalyte is what we recommend for that.

Your body has natural windows for muscle protein synthesis. GLP-1s don't change that biology.

The most impactful timing habit: get protein within 30 minutes of any resistance training session. And try to spread protein intake across your smaller meals throughout the day rather than getting most of it in one sitting.

You don't need to force yourself to eat. A gentle phone reminder can help you stay consistent — not to eat when you're not hungry, but to make sure your muscles have what they need when they need it.

Here's something that trips up almost everyone: you could stay at the exact same weight while completely changing your body composition. Muscle is denser than fat. As your body recomps, the scale might barely move — but you're getting leaner, stronger, and healthier.

Track more than the scale. Take monthly progress photos. Record your measurements. Note how your clothes fit, how your energy feels, and how your strength is changing week over week.

The scale is one data point. Body composition is the whole story.

These five habits work with your medication, not against it. Your GLP-1 handles appetite. You handle the inputs that protect muscle.

If you're looking to start or optimize a GLP-1 program with a doctor in your corner, Hims offers same-week access to physician-supervised weight loss plans. And for men looking to pair hormonal optimization with their GLP-1 journey, Hone Health is worth a look — their telehealth team specializes in exactly this.

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