TweetIt is really bad stuff. It is highly addictive. Back in the 90s it was big. I knew guys who would shot in a sore musle to help train through the pain, then it was in the legs to get a better workout, next they start doing it becuase they are addicted, at the final stage they will shoot IV. I personally know guys who have lost everything becuase of it and they dont train any more and look like shit, their women left them.