When we practice footsteps, the need to use the stopwatch to control the speed, to be gradual, and gradually add the upper body forward tilt point of view, a step by step slowly, until you find the most comfortable point of view. This will not only be able to practice stamina, but also not feel overworked after running.
Running is a "technical living", which requires stopwatch master of science running skills, long run not tired. The pace of running is the pace of your running, to a large extent determine your ability to run. Here I can introduce some steps to your practice methods, you want to improve the running ability of friends can give it a try Oh!