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Can I maintain muscle while fasting?

I’m trying to lose fat weight and lower body fat % by OMAD and water fasting. I plan on hitting the gym(cardio and weightlifting) while I fast. Will this help me maintain/gain muscle?

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Answer

From what I’ve read on the issue, low intensity exercise will help maintain muscle mass during extended water fasts. By low intensity, I mean 60% of the weight you’ll do at the gym (ball park figure), or light jog/brisk walk.

For OMAD, anecdotally you can gain muscle, so long as you’re close to maintenance calories and have enough protein.

Answer

Study of Buchinger fasting participants showed the “exercise group” and “non-exercise” group lost about 1kg of “protein” over the course of a 28-day fast. Doubtful that the protein loss was muscle though, because the “exercise group” gained strength throughout the fast.

https://www.karger.com/Article/FullText/357828

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