Head below your hips and in line with your spine in 40 stance to give yourself the best possible chance of success. This start position coupled with horizontal shin angles will allow you to maximize your ratio of force in the beginning steps of the run. #speed #speedhacks #speedcoach #speedtips #speedcoaching #performancecoach #40yddash #40yarddash #nflcombine #nfldraft Head to universalspeedrating for my custom speed programs!