If you take enough (i.e., MASSIVE AMOUNTS) drugs, anyone can get big and strong. Anyone. True, there are genetic factors such as length of muscle bellies/insertion points, etc., but if you are on a shitload of GH, steroids, insulin and who knows what else and eating like a PIG, then you are going to be bigger and stronger. When you get off all that crap is when you look like Kevin does here.
Outside of the aforementioned factors, without his drugs Kevin Levrone (whom I admire for getting off that crap), Ronnie Coleslaw (whom I loath) and pretty much all pro bodydopers are no better built nor stronger than most who come here. It's not a genetic thing, it's a chemically enhanced thing and they are responding to disgustingly large amounts of drugs. How could you not respond to what amounts to grams of test every week coupled with a buttload (literally) of other drugs? Chumpions.
