When training young athletes to sprint correctly, I like to use the Dead Leg Run exercise with the mini hurdles. One leg is “dead” and barely moves. We isolate the action on the other leg to emphasize knee drive and triple extension of the hip, knee, and ankle. We coach the athlete to drive the knee up and press down hard on the ground with the ball of the foot. After we do the exercise on both legs, the athlete then goes over the hurdles with both (right video) and like “magic” his form is polished, improved, more efficient, more athletic. Good job, Matt!