Lots of people are making the accusation that Brock Lesnar has been using steroids all his life. If the USADA findings are made public we'll know if he was on steroids for UFC 200 or not but he's clearly lost a lot of muscle mass compared to early in his pro wrestling career. Just look at how he used to look compared to now. he had a lot more mass, especially in his legs. If he did use steroids recently it was just for UFC 200. he doesn't do them for his WWE job. In fact, he usually wears a shirt in all his WWE appearances now and over the last several years. Back when this picture was taken he never wore a shirt for his WWE appearances, was aways tanned, and had a lot more mass.