I had a note [1] from Andy Galpin talking to Dr Herman Pontzer on population variation, but Pontzer’s area of expertise and his study of energy expenditure lack of variation was also really fascinating. Note , cqn expand later, my recollection of how in his 5 month daily marathon experiment, peoples daily energy expenditures stabolized , adapting, to just above their baseline . And this was just one among many studies he noted about how our energy expenditures are quite so similar.
But that last study sort of put a higher certainty on how exercise is great for basically everything except weight normalization (loss).