Why are most athletes/ body builders bald?!

I don't think they are.
But if they are, it's probably because baldness is associated with high testosterone levels. It seems like athletes and body builders would be more likely than others to have high testosterone levels.

They probably get distracted from it. Or they shaved it because it makes them sweat more. Girls out their up when they workout so they sweat less and aren't as hot which is kindve like a girl cutting her hair off.. So basically hair makes them sweat more and distracts them.

No i don't think so....protine shakes doesn't makes hair loss....male hormones does but i doubt anyone take it since it's not good for the health....it's a great style....and being bald or crew shourt hair is very manly...

Are they? I hadn't noticed. Maybe hair is a distraction to them.