When losing weight, about 75% fat and 25% muscle is lost, with a ton of variables being in there (exercise routine, how much muscle you have, what your diet loo

When losing weight, about 75% fat and 25% muscle is lost, with a ton of variables being in there (exercise routine, how much muscle you have, what your diet looks like, etc). Lots of arguments about what diets maintain the most muscle (e.g. fasting people say they keep the most muscle, and as much as I love fasting, plenty of studies say that is probably not true.)