There are two forms of bodybuilding. The first is called Biological. It is the best, the original and commonly known as "natural". It is the form advocated by all bodybuilding associations, but seldom practiced by the world's best bodybuilders; in fact, there are NO natural bodybuilders at the very top of the competitive bodybuilding ladder, as in Zip, Notta, Zero, Diddly-Squat, NONE!