Idk about most Olympic athletes using drugs. But even if that were true, the effects of those drugs would only show a difference in the top athletes. Sprinters in general are built similarly.
And you’re right about aptitudes and body types. But it’s not clear whether those body types are shaped by the activity or if the body type gravitates to that activity. Probably a little of both.
Let’s say that a fat person becomes fat adapted. Why can’t he just run endlessly until his fat is gone? How does he run out of energy with those massive tits and love handles?
