Bill Pearl swears he made his best gains and mass by switching to veggie and stayed with it the rest of his life... He was a vegetarian when he beat Arnold, and correct me if wrong, but isn't he one of few who has beaten both Sergio and Arnold? For a guy with limited chemical enhancement (even if u don't believe his claims, historically he didn't have access to much compared to today's competitors) he looked terrific and claims vegetarian diet allowed him to train hard and heavy, into his 80s...