Usually, the water temperature in the swimming pool is between 26 and 28, so soaking in the swimming pool consumes a lot of energy and dissipates heat quickly. In order to quickly replenish the heat emitted by the body and supply the balance between cold and heat, the nervous system will respond accordingly to accelerate the metabolism of the human body, thus enhancing the adaptability of the human body to the outside world and enhancing its ability to resist the cold.

Second, bodybuilding: when swimming, people will use buoyancy to lie on their backs or lie prone in the water, so that the whole body is in a state of relaxation and stretching, and the body develops in a coordinated, comprehensive and symmetrical way, making the muscle lines of the human body smoother. In addition, the influence of water exercise on bones is smaller than that of ground exercise, which will reduce the probability of bone strain and the joints are not easy to deform, so swimming also has a bodybuilding effect.

Third, enhance myocardial function: when people swim, the role of water will make our limb blood flow back to the heart easily, thus speeding up the heart rate. People who insist on swimming for a long time will obviously enhance their cardiac activity, and the blood vessel wall will contract, thicken and be elastic, thus increasing the stroke output and enhancing the human myocardial function.