This was basically the question posed to me by my friend, Justin Lee, a world-class freediver and spearfisherman who is already hard at work training for the 2020 World Championships next Fall.
Today’s episode of The Qualys is from podcast #26 – AMA #3: supplements, women’s health, patient care, and more.
I’m left bewildered: there are more questions than answers in most scientific pursuits, but I want to stress the point here that these aren’t rhetorical questions.
But in the short-term (at least up to a week for most people), I believe you can maintain muscle mass while fasting, particularly if you’re resistance training.
All of this is very interesting, but what I find much more interesting in this study is that the placebo group did not lose any substantive LBM, while losing about the same amount of fat (10 lb) as the testosterone group, despite the severe CR/energy-deficit.