A lot of the wrestlers do coke I suspect.
I know some body builders who went through nightclub phases, where they loved taking E's and also GBH (and ironically they would only drink water all night!).
Then you have your bodybuilder bouncers, who stand there all night chewing gum, and doing speed (and coke when they can get it)!
I also know some body builders, weightlifters, and powerlifters, who pretty much end each night with a beer or 2 and a joint.
But I do think many of the top guys these days are pretty moderate with rec drug use, and many of course stay entirely away...