You’re going to lose some muscle mass with weight loss. Fasting included. It’s inevitable. BUT with continued resistance training you’ll mitigate that muscle loss quite a bit. Don’t go hard as you’re maintaining, not building. A good full body workout a couple days a week will go a long way.
Dr Jason Fung speaks to this. Yes you’ll lose some muscle mass, but not a large amount. You’ll gain it back when you start eating again especially since your HGH will be elevated from the fast.
As others have said, do resistance training still, just don’t go for PRs or do anything crazy.
You’re going to lose some muscle mass with weight loss. Fasting included. It’s inevitable. BUT with continued resistance training you’ll mitigate that muscle loss quite a bit. Don’t go hard as you’re maintaining, not building. A good full body workout a couple days a week will go a long way.
Recent studies show that fasting weight loss is 90% fat and 10% muscle, however calorie restricted “diets” each pound lost is 75% fat and 25% muscle. Research also suggests that staying active helps preserve muscle and can be as easy as going for a daily walk.