1, cold-resistant, adaptable to temperature changes. The contraction of body surface capillaries stimulated by cold water and the reflex relaxation of skin capillaries caused by hypoxia during exercise are repeatedly experienced by people who often participate in swimming, which can greatly enhance the flexibility of nervous system to control the contraction and relaxation of skin blood vessels, and also greatly enhance the ability of human body to adapt to temperature changes and resist cold.
2. Enhance cardiopulmonary function. Compared with ordinary people, people who swim for a long time have better cardiopulmonary function. This is because the massage effect of water flow on the horizontal human body greatly improves the speed of heart blood return, and the whole body exercise strengthens the blood transfusion to the heart and brain, which is conducive to the prevention and treatment of cardiovascular diseases. In addition, the burden of respiratory muscles increases greatly when swimming, and the water pressure of 12- 15 kg compresses the whole brain cavity, which is helpful to increase the vital capacity.
3, body shaping and beauty. Swimming can exercise the muscles of the whole body in a comprehensive and balanced way. In order to overcome the resistance of water, people need to consume a certain amount of calories, so swimming can gradually reduce excess fat and effectively exercise the muscles of the chest, back and limbs. Swimming can be called an aerobic exercise in water, which can keep people healthy.
4, calcium supplementation and skin care. When swimming outdoors, the sun shines directly on your body. 7- dehydrocholesterol will be converted into vitamin D in the body to promote calcium and phosphorus metabolism. Vitamin D can also prevent calcium deficiency and rickets, which is beneficial to the growth and development of human body, especially children. Frequent outdoor swimming can increase the contact frequency with fresh air, water and sunshine, and also protect the skin and prevent skin diseases.
What are the advantages and disadvantages of winter swimming?
1, people who take part in winter swimming generally benefit. Through winter swimming, I have improved my quality of life, eating well, sleeping well, being energetic and quick-thinking, seldom catching a cold and suffering from other diseases.
2. Eliminating diseases and resisting aging has a certain regulatory effect on hypertension; Reduce hyperlipidemia and high cholesterol in a certain range. Winter swimming can enhance the adaptability to cold stimuli, improve the body's resistance and delay the aging process.
3. Like vascular gymnastics, winter swimming can increase blood vessel elasticity and speed up blood flow, reduce and sprint fat particles and cholesterol deposited on blood vessel walls, alleviate and delay arteriosclerosis, and prevent thrombosis and coronary artery infarction.
4, can enhance cardiopulmonary function. After winter swimming, myocardial contractility is enhanced, blood circulation is accelerated, and the functions of various systems of the body are well promoted and developed.
5, can enhance their own immunity, immunity refers to the body's ability to prevent and resist invasive pathogens. Many indexes of winter swimmers after swimming, such as lymphocytes, white blood cells, phagocytes, immunoglobulins, etc. , are significantly higher than before swimming.
6. Winter swimming can promote endocrine. After the human body is strongly stimulated by cold, it is immediately reflected to the pituitary gland, adrenal gland, pancreas, gonad and other glands through the nervous system, and each gland secretes corresponding hormones, which are called neurohumors. Then the physiological functions of the corresponding organs are adjusted through the corresponding nerve centers to establish a new balance. It can be said that the secretory function of each gland should follow