Running is defined as land animals moving with their feet. It is defined as a step in sports, and both feet will not land at the same time. It can also be aerobic exercise or anaerobic exercise.
Arms and hands
Essentials of running action-the swing arm should move back and forth with the shoulder as the axis, and the range of left and right movement should not exceed the midline of the body. Fingers, wrists and arms should be relaxed, and the elbow angle should be about 90 degrees. Swing forward slightly inward and backward slightly outward.
Strength stretching-elbow lifting and swing arm. The arms are in the ready-to-start posture, the elbow joint of the rear swing arm is raised as much as possible, and then the forward swing is relaxed. With the acceleration of the action, it is raised higher and higher.