e-bone is correct. Steroids will affect you depending on how you use them. They basically shorten your recovery time/downtime from workouts and make it easier to build lean muscle mass. Thus, depending on how you work out, you can use them to bulk up, or to work on you endurance and stamina. It's up to your individual regimen, the same as it would be otherwise. Soccer players train a certain way. It's different from the training football players use. Steroids will simply enhance these workouts, not alter their purpose. Jose Canseco has written at length about them. Dude was ripped, and has all but admitted that he was lazy. He used them because they allowed him to get the same results working out only a fraction of the time that someone else would. Someone like Bonds, for example, is a workout beast. He would see very good results either way. However, adding steroids to the mix can make him downright inhuman. I've been taking a prescription drug for several years now that they say stimulates the natural production of HGH, as a side effect. Since taking it, I've gained 20 lbs (I've never been able to gain weight before). The most disturbing thing is that if I increase/change workouts even modestly, I can see a fairly drastic change in my physiology.