Arnold Schwarzenegger was always about definition, not bulk--Mr. Universe contestants are really not "piles of muscle", they're about increasing the size of particular muscle groups. Have a look at the guys who participate in World's Strongest Men competitions; they really *are* piles of muscle, and some of them you'd even call fat, but you need to have a physique like that to pull a truck along a road or bench-press 300+ kg weights. A Mr. Universe contestant who tried that would probably herniate their abdominal muscles.