Football legend Walter Payton made hill sprints his bread and butter… they carried him to the NFL rushing record and the Hall of Fame. Another gridiron great, Jerry Rice ran legendary make you puke hill sprints… and was still playing in the NFL at age 40. Running back Marcus Allen… all he did was win the Heisman and become Super Bowl MVP with hill sprints. Linebacker Junior Seau has played 17 years in the NFL and made over 1200 tackles using hill sprints… sometimes while carrying a partner on his back. Defensive end Simeon Rice stays relentless in the 4th quarter due to his hill sprint training… he has 119 sacks in 11 years to show for it. Jets running back Curtis Martin – who rushed for 1000 yards in each of his first 10 seasons and has over 100 career touchdowns – regularly runs the stairs of Santa Monica, California during the offseason. Even Lance Armstrong – although on a bike – has made hill sprints a staple of the training that won him 7 Tour de France titles.