Exercise on Ozempic: What a Dietitian Actually Recommends

Here's the question I actually get: "Do I even need to exercise if the medication is working?"

The medication handles appetite. It doesn't handle muscle.

Up to 40% of the weight you lose on GLP-1 medications can be muscle if you're not actively protecting it. Exercise, specifically resistance training, is one of the two pillars of muscle preservation. The other is protein. You need both.

Cardio vs. Resistance Training on GLP-1s

Most people default to cardio because it "burns more calories." On a GLP-1, you don't need help burning calories. The medication is already creating a deficit through appetite suppression. What you need is a signal telling your body to keep its muscle.

That signal is resistance training.

I'm not saying don't walk. Walking is great for mental health, gut motility (helps with constipation, which is a real problem on these medications), and general wellbeing. Keep walking. But if you have to choose between 30 minutes on a treadmill and 30 minutes lifting weights, lift the weights. Every time. Read more about why in our guide on preventing muscle loss on GLP-1 medications.

What "Resistance Training" Actually Means

You don't need a gym membership or a personal trainer. You need to challenge your muscles against resistance regularly.

• Bodyweight exercises count. Squats, push-ups, lunges, planks. If you can do them, they work.
• Resistance bands count. Cheap, portable, surprisingly effective.
• Dumbbells at home count. A pair of 10-15 lb dumbbells and a YouTube video is a perfectly legitimate workout.
• Machines at the gym count. If you have access and enjoy it, great.

The specifics matter less than the consistency. 2-3 times per week. Something that makes your muscles work hard enough that the last few reps are difficult. That's the signal.

The Nutrition Piece (This Is My Lane)

Exercise without adequate protein is almost pointless for muscle preservation. Your muscles need amino acids to rebuild after training. If you're not eating enough protein, you're breaking down muscle during the workout and not giving your body what it needs to build it back.

Before or after a workout, aim for 25-30g of protein. A protein shake works. So does Greek yogurt with granola, chicken and rice, or a turkey wrap. The timing doesn't need to be exact. Just get it in within a couple hours of training.

And eat something before you exercise. I see too many GLP-1 patients working out fasted because they "aren't hungry." You need fuel. Even a small snack. A banana with peanut butter, a protein bar, anything. More ideas in our high-protein snack guide.

When to Be Careful

The first few weeks on a new dose, exercise can feel harder. Nausea, fatigue, low appetite all compound. Scale back intensity during dose changes. A light walk is better than skipping movement entirely.

If you feel dizzy or lightheaded during exercise, stop. Eat something. Drink water. This is more common on GLP-1s because of lower blood sugar and dehydration. It doesn't mean you can't exercise. It means you need to fuel and hydrate better before you start.

The Bottom Line

Resistance training + adequate protein = muscle preservation. That's the formula. Cardio is a bonus, not the priority. Start where you are, do what you can, and don't skip the protein.

Your future self will thank you.