What are the benefits of swimming in winter?

There are many benefits to persisting in winter swimming. Middle-aged and elderly people make up the majority of the current winter swimming force. "Winter swimming is a sport for the brave." These brave middle-aged and elderly people experience joy and pride in winter swimming. Middle-aged and elderly people who participate in winter swimming are emotionally stable, eat well, sleep well, and appear to be much more energetic than their peers. Why is this? Studies have confirmed that winter swimming can exercise people's will, enhance cardiopulmonary function, improve the regulation ability of the neuroendocrine system and human immunity. It can be said that the functions of various tissues and organs throughout the body can be exercised and improved during winter swimming. Middle-aged and elderly people who have persisted in winter swimming for many years have stable brain electrical activity, cardiac electrical activity, and gastric electrical activity, increased myocardial strength, cardiac output, vital capacity, etc., low total cholesterol and triglyceride levels in the blood, and increased high-density lipoprotein. All of these can delay the process of arteriosclerosis, improve the blood supply to tissues and organs throughout the body, thereby reducing the risk of cardiovascular and cerebrovascular diseases in middle-aged and elderly people. The content of reduced glutamine sulfur in red blood cells of people who have been winter swimmers for many years increases, and the content of copper-zinc superoxide dismutase increases. This can improve the ability of red blood cells to carry oxygen, enhance the body's metabolism, accelerate the excretion of catabolite metabolites, and remove free radicals and reactive oxygen species that are generated in large quantities due to reactive stress. When a person is exposed to a sudden strong cold stimulus, the secretion of thyroxine and adrenaline will increase significantly. However, those who have practiced winter swimming for a long time can return to normal levels within 1 hour; while those who have not practiced winter swimming will still have higher levels after 3 hours. The catecholamines in the blood of people who have been winter swimming for many years are significantly reduced, and interleukin-6 is significantly increased. These research results show that the bodies of people who are accustomed to winter swimming have acquired a certain degree of cold habits, and their ability to adapt to changes in environmental factors has been greatly improved. Middle-aged and elderly people who have been swimming in winter for many years have significantly increased immunoglobulins G, M, and A; white blood cells and other lymphocytes-4 and lymphocytes-8 that have the ability to phagocytose foreign bodies, T cells and B cells that have the ability to recognize and eliminate foreign proteins, and natural The number of killer cells is significantly increased, which can effectively improve the body's immune function, improve the function of preventing the invasion of pathogenic factors such as bacteria and viruses, and eliminate and remove them, improve the function of preventing senescent cells from remaining in the body and aggregation, and improve monitoring of mutant cells. Carcinogenesis function. Relevant surveys also show that the quality of life of winter swimmers is generally higher. Most of the diseases that middle-aged and elderly people are susceptible to are far away from those who have been winter swimming for many years. Winter swimmers often feel a strong sense of euphoria and pride after getting out of the water. In their own words, they feel "as comfortable as you want." This kind of psychological satisfaction and spiritual pride may also be an important factor in the health and longevity of winter swimmers. Although winter swimming for middle-aged and elderly people has many benefits, it must also pay attention to science. The purpose of winter swimming is fitness and entertainment, not to challenge limits. Winter swimming must be done step by step, it varies from person to person, and you must do it according to your ability and persevere. The most important thing is to strictly control the amount and degree of the best effect according to your own physical condition and feelings. Never compare with others, let alone show off and act recklessly.