SWIPE to see the First session Before/After of high school sophomore hurdler Jonah M. Jonah is not alone in his before photo as so many athletes young and old have the same habit. Bent over posture at top speed absolutely kills any potential to hit that last gear. High heel recovery inhibits the ability to get proper knee drive, and proper knee drive is essential for the foot to move in a negative direction and land underneath the body. Watch the third slide where you can see the before and after in slow motion. Tag someone that runs like this and could benefit from some mechanical changes.