Walter Payton, also known as Sweetness, is considered one of the greatest running backs in NFL history. Known for his incredible endurance and stamina, Payton was a force to be reckoned with on the field. As his career progressed, he continuously pushed himself to new levels of physical fitness, constantly improving his endurance and stamina. Whether it was breaking tackles or outrunning defenders, Payton's remarkable endurance and stamina allowed him to dominate the game and solidify his legacy as one of the greatest athletes in football history.