1, swimming. The water temperature in the swimming pool is often 26 to 28 degrees, so soaking in water dissipates heat quickly and consumes a lot of energy. In order to supplement the heat emitted by the body as soon as possible and meet the needs of cold and heat balance, the nervous system reacts quickly, accelerating the metabolism of the human body, enhancing the adaptability of the human body to the outside world and resisting the cold. People who often take part in winter swimming are not easy to catch a cold because of the improvement of body temperature regulation function, and can also improve the endocrine function of human body and increase the function of pituitary gland, thus improving the resistance and immunity to diseases.

2. Jump rope. Skipping rope can enhance the functions of cardiovascular system, respiratory system and nervous system. Skipping rope can promote the development of human organs, benefit physical and mental health, enhance physical fitness, develop intelligence, enrich life and improve comprehensive quality. When skipping rope, the whole body movement and the stimulation of thumb points by holding the rope will greatly enhance the vitality of brain cells and improve thinking and imagination, so skipping rope is also the best choice for brain health.

3. Running, push-ups, basketball, badminton, etc.