Only the correct posture can make you run fast, efficiently and not easily injured. One of the keys to burning fat is running at an intensity close to your anaerobic limit (anaerobic threshold). The correct posture can enable you to reach this intensity without wasting extra energy. Forward is the most important part of running posture. In order to ensure that the forward strength can prevent the deformation of exercise after fatigue, Dr. Yasis suggests strength and stretching exercises. The stretching exercise of runners should be "dynamic stretching", not ordinary static stretching, because running itself is dynamic. Several stretching exercises introduced in this paper can be carried out after warm-up or practice. The essentials of running head and shoulders-keep the head and shoulders stable. Keep your head forward. Don't lean forward unless the road is uneven. Keep your eyes on the front Relax your shoulders properly and avoid having a chest. Strength stretch-shrug. Relax your shoulders and droop, then shrug as much as possible, stop for a while, and repeat after recovery. The essentials of arm and hand running-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 body midline. Fingers, wrists and arms should be relaxed, and the elbow angle should be about 90 degrees. 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. 3, trunk and hip running action essentials-keep upright from the neck and abdomen, instead of leaning forward (unless accelerating or uphill) or leaning back, which is conducive to breathing, maintaining balance and stride. Don't shake your torso from side to side or fluctuate too much. Actively send your hips when your legs swing forward, and pay attention to the rotation and relaxation of your hips when running. Strength stretching-lunge leg press. Separate your legs back and forth, shoulder width apart, and slowly press down on the center of your body until your muscles are tense, then relax and recover. The torso remains upright all the time. 4, the essentials of waist running-keep the waist naturally upright, not too straight. The muscles are slightly tense, so keep the trunk posture and pay attention to buffering the impact of the foot landing. Dynamic stretching-flexion and extension. Stand naturally, feet apart, shoulder width apart. Bend your torso forward slowly until your hands hang down to your toes, and keep it for a while before recovering. 5, thighs and knees running action essentials-thighs and knees swing forward hard, instead of lifting. Any lateral movement of the leg is unnecessary, and it is easy to cause knee joint injury, so the front swing of the thigh should be positive. Dynamic stretching-front bow. Stand with your feet as wide as your hips. Put your hands behind your head. Bend forward from the hips. Keep your back straight until your biceps feel tense. 6, calf and achilles tendon running action essentials-the foot should fall about one foot in front of the body, close to the center line. Don't cross the calf too far, so as not to strain the achilles tendon due to excessive stress. At the same time, we should pay attention to the cushioning of calf muscles and achilles tendon when landing, and the calf should actively scrape the ground backwards when landing, so that the body can actively move forward. In addition, the calf should swing forward, and the foot should move forward as far as possible, and it can't be everted or everted, otherwise it will easily damage the knee joint and ankle joint. You can check your footprints when running on the beach for reference. Dynamic stretching-supporting heel lifting. Stand facing the wall for about 1 m, stretch your arms forward shoulder width, and hold the wall with both hands. Raise your heel and then put it down. Feel your calf and achilles tendon tense. 7. Essentials of running on heels and toes-If the stride is too large and the calf stretches too far forward, it will land with the foot, resulting in a braking reaction, which is very harmful to bones and joints. When landing correctly, land with the middle of the sole of your foot, so that the impact force can quickly spread to the whole sole. Kneel on the ground with your hips close to your heels.