Flex Wheeler had a doctor inject it in his shoulders & arms, & you really couldnt tell, except that he wasnt as detailed as, for ex, Ronnie Coleman. That grainy look he was lacking, but his muscles werent lumpy, like Marcus Ruhl. If you notice Ruhl's bicep, when he straightened it still had a knot in it. Not cool. Dead giveaway. Then you have Nasser, who looked good at first when using it, then it got out of hand. Same with the biceps, but his shoulders got bigger than his head, and they were very blurry. I am fortunate enough to have all body parts that arent stubborn, so I never needed it, but if your someone like Milos Sarcev, with his poor biceps, he really had no choice. I think I would of used AAS, to spot check them but still would have to use it in moderation. Personally if you dont have stubborn/genetically screwed up body parts, you have no business using it. Looks stupid. Ex: Ernie Taylor=ridiculous! How he placed in the top 10 at the Mr O, I dont know. What a travesty!