Training injuries. Steroids will heal a guy faster, and some will take it for that.

In UFC, steroid-cheating has been right out in the open for several years. Years ago, Joe Rogan on-air commenting about Randy Couture undergoing Testosterone-Replacement Therapy on Docter's orders. Testerone is a steroid. The message is if you get a Doctor's note, then steroids is okay. They recently made changes though about a month ago, and the day after that announcement, Belfort pulled out of his next scheduled fight.