Anabolic steroids, typically testosterone derivatives, are used to enhance performance by allowing faster recovery and increased protein synthesis.

“And typically anabolic steroids are of the testosterone variety. There are derivatives, et cetera. And those derivatives do different things in the anabolic versus androgenic, et cetera. But typically the idea is, at least as I understand it, in talking to some of these individuals, is that they allow people to train more, because they recover faster. They are able to synthesize more protein, because they're basically getting a second puberty, because as we all know during puberty, there's a lot of growth of the body.”