Yeah, he made the "Ali Shuffle" look easy! He was one of those people who seemed almost "engineered" for a specific sport. I'm no kinesiologist, but I'm guessin

Yeah, he made the "Ali Shuffle" look easy! He was one of those people who seemed almost "engineered" for a specific sport. I'm no kinesiologist, but I'm guessing the secret to his speed--including that shuffle--was related to insanely tuned fast-twitch muscle fibers. It's the same muscle fiber type that provides the explosive power and acceleration that give many basketball players their impressive vertical leaping abilities. These muscles can also be further developed to some extent, and he was also a really hard worker. Amazingly, he later declared that he hated every second of his training, but knew it's what he had to do.