Football is a sport that many people like, and many people use it to keep fit. Football fitness is really a good way to keep fit. While enjoying playing football, it can also keep fit and bring joy and fitness to football players. I believe all the players who have played football know that football requires quick action and reaction, quick change of action according to the change of situation, quick start and running, and urgent stop. Quickly judge the situation, seize the opportunity, and so on. Therefore, in such a complicated and changeable competition, athletes' nervous system activities are very tense. After long-term exercise, the function of the central nervous system can be improved, the action becomes sensitive and the response becomes rapid. At the same time, in the ever-changing game field, we should be able to clearly see the position, distance, direction and speed of the opposing team and our players; To accurately judge the distance, direction and speed of the ball, it is necessary to have visual participation. So often engaged in football, people's sense of movement and visual function will be greatly improved. In football matches, athletes almost always engage in intense muscle activities, such as running and jumping. Over time, with the improvement of training level, muscles will become stronger and stronger. In addition, football also has the functions of cultivating temperament, improving intelligence and keeping fit. In the highly competitive football field, the sense of collective honor will make athletes forget everything about themselves. He deeply knows that every move of an individual is related to the success or failure of the whole team, and any selfish distractions and deviant behavior will be exposed to the public and morally condemned. So football helps to cultivate people's organization, discipline and collectivism. Under the influence of long-term running and jumping, the myocardium is strong, the number of heartbeats decreases when it is quiet, and the blood discharged by contraction greatly exceeds that of ordinary people; The function of the lungs is better than that of ordinary people, and breathing becomes deep and powerful. Every time the exhaust volume increases, the vital capacity increases accordingly. Eyes are also worth mentioning. In football, the eyes keep turning like football, sometimes looking far, sometimes aiming very close, suddenly shooting in all directions and staring at all directions. In this way, the adjustment of eye muscles and lens is enhanced, and the visual function is greatly improved. As for limbs, muscles and bones, of course, they are all exercised without exception. Playing football can not only cultivate sentiment, make body and mind happy and free, but also make movements more sensitive and muscles stronger and stronger, which plays a role in fitness. Therefore, friends who want to keep fit, playing football is a good way to keep fit.