Improve your running by trying to fix up in these 3 areas. 1. Posture - long and strong from head to heel. 2. Leg action - Depends on whether your in acceleration or top speed. Acceleration is more of knee drive and piston like action with positive shin angles for the foot to strike the ground on an angle to propel you forward. Top speed is a cyclical action, like riding a bike. 3. Arm action - Short lever in front and long lever at the back. Like a V - shape on the front arm and back arm, is li