Dr. Keith Baar, an exercise physiologist at UC Davis, put it simply: "It's still important for patients taking GLP-1 medication to limit muscle wasting through exercise and high quality protein."
But here's the problem: You're not hungry. You don't WANT to eat protein. Your appetite is gone.
And if you're tired (a common side effect), you don't feel like working out either.
Most of all: if your testosterone isn't high enough, you could do all the right things, but the testosterone signal isn't there to keep your muscles in tact.
So the muscle just... vanishes.
One study presented at the American Diabetes Association found that up to 40% of weight loss on these drugs comes from muscle. Let that sink in.
If you lose 40 pounds, 16 pounds could be muscle.
That's like losing the entire muscle mass of one arm and one leg.