Improve respiratory function more effectively. Football is a combination of running and leg sports. In the process of running, passing the ball, shooting the ball, etc., the depth of breathing will be strengthened, so more oxygen will be absorbed and more carbon dioxide will be emitted, which will increase lung capacity and enhance lung function. This is because the main well group (inside and outside the muscle between every muscle, rib, rib levator, up and down after saw muscle, etc.) and auxiliary breathing muscle group (scalene muscle and sternocleidomastoid, small chest muscle, pectoralis major, etc.) to strengthen contraction, and promote the development of the muscle itself, thoracic expansion, chest volume increases, the alveolar well developed, breathing strength, lung capacity, pulmonary ventilation and oxygen absorption (pictured). Some studies have pointed out that due to the strong adaptability of the body, people who exercise regularly show stable, deep, well-balanced and slow breathing, and their breathing frequency is 7-11 / min when it is quiet, while those who do not exercise have a breathing frequency of 12-18 / min, and women have 2-3 / min faster than men. 2. Strengthen leg bones: football is the best exercise for leg training. In the process of constant movement of the legs, due to promote the metabolism, bone blood supply is improved, the morphology of bone structure and function of the good changes have taken place in the: thickening of compact bone, make the bone, the arrangement of the trabecular bone according to different stress and tension more neat and orderly, bone bulging muscles attached to the surface of the more obvious. These changes make bones stronger and stronger, thus improving their ability to resist bending, bending, compression and torsion. Physical exercise can also enhance the strength around the joint, joint capsule and ligament thickening, thereby increasing the stability of the joint; At the same time, physical exercise increases the extensibility of the joint capsule, ligaments and surrounding muscles, thus improving the flexibility of the joint. 3. More effective to extend life. A 10-year study showed that people who do not exercise are 42 times more likely to die young than people who play soccer. 5%. The reason is that the body does not exercise, will speed up the aging in many places, even premature senility. Those who do not exercise are also less resistant to cancer, heart disease and other diseases than those who play football.