I've seen friends of mine go down this road with, and it's not good. Don't get greedy. You have gift of a young man's metabolism and natural testosterone. That's all you need, along with some good designer nutrition suppliments and hard work. I have a friend and former training parter who played around with near-steriod stuff quit a bit. He put on tons of muscle, increased his strenght a ton, and has all kinds of elbow and shoulder trouble as a result. He's 25 now, and now that he's done with college and has a job, he can't workout nearly as much, and he's lost most of the gain. He elbow and shoulder trouble remain. He used to box in his teens and we used to work out boxing when I didn't have a gym an a trainer. Now his joints can't handle a boxing workout. I'm 35 years old (and believe me, that makes a big difference) and his joints can't handle my boxing working at 25. Do the work, man, and be patient. I had never been in GREAT shape until I got serious about fitness at 29, and even then, with just some protein and glutamine, I made awesome progress in about 6 months and stayed heathly. If I had worked like that in my early 20's, I can only imagine.