Once one of the top American boxers (hence his nickname— The Greatest), Ali was known for his powerful jabs and lightning fast footwork. (He once joked that he was so fast he turned off the light switch and was in bed before the room went dark.) During his prime, Ali's daily workout was more than what most men do in a week: He'd get up at five o'clock to stretch and run six miles. Then he'd eat—but only natural foods such as chicken, steak, green beans and potatoes. Every afternoon, he'd hit the gym for three hours for a warm up, shadow boxing routine, a stint on the bag, some sparring and floor exercises. Not surprisingly, Ali retired with an overall professional record of 56 wins and just 5 losses.