Many runners have bought better shoes or spent longer hours on the track trying to improve, only to end up frustrated with back and leg pain. But the secret to improving is simple - your stride is only as good as your physical abilities allow. In explosive running, Dr Michael Yessis, a respected sports fitness expert, demonstrates the method he has used successfully with thousands of runners. His methods consist of three overlapping steps all runners should go through in order to improve their performance and make the transition to effective, efficient, and faster running