Even amongst traditional calorie deficits, rapid weight loss results in greater loss of muscle mass when compared to gradual weight loss, even if you lose the same amount of mass overall. I.e. you keep more muscle losing 0.5 lbs a week over 40 weeks than 2 lbs a week over 10 weeks.
> Even amongst traditional calorie deficits, rapid weight loss results in greater loss of muscle mass when compared to gradual weight loss,
This does not make any sense. Why would the body prefer anything over the most dense and available calorie store? Protein in muscle gives shit calories per gram, it is hard to build back and generally less available than fat: the number one energy store, doing exactly what it does.