Let`s say you`re like 20 years old or 40 even, and you`ve been training so long that the body is used to building muscles, you`d gain couple of pounds of muscle every month, anyways. What do steroids really do? Is it like the oxe that was overly muscular from birth, muscle just builds themselves because of increased synthesis? The body produces enough testosterone and other hormones to build muscles, is it really easier to build muscle on it, or do you just train harder? What`s the difference?