Even when I was at my phsyical peak (years ago) I never looked like this super body builders, even though I was more than capable of running 20 kilometers and bench pressing a hundred pounds (and yes I did take protein powder and whey and never ever got as big as these people).

Men who are this big are on Steroids or something similiar to steroids, if they say otherwise they're probably lying or maybe have good genetics.  I have a cousin who is a professional weight lifter and he describes the things he takes, they pretty sound like steroids, and he has to clean his system weeks before going to a competition.

Guys won't even admit to using steroids or anything similiar because it'll result in – "so, do you have a small penis" jokes.