The fitness effect of insisting on winter swimming is good and fast, and the time of winter swimming in the water is not long and the amount of exercise is relatively small. The intense cold of winter swimming stimulates the body's stress response, mobilizes the whole body's blood to flow rapidly, and makes the whole body's blood vessels dilate and congestion. The whole body's blood vessels undergo a movement process of "contracting first, then expanding", which is called "intense vascular gymnastics". Strong cold stimulation and physical adaptability are intense, profound and thorough in the operation of various organs and the whole human body.

Because winter swimming has many benefits, from Hainan Island in the south to Harbin in the north, there are organizations like "Winter Swimming Association" all over the country, and Guangzhou is no exception. The most prominent is the ice city Harbin. Every winter, winter swimmers braved the cold of MINUS 20℃ and broke the ice on the Songhua River, which became a beautiful landscape in Harbin in winter.

What are the benefits of winter swimming? The intense cold stimulation of winter swimming is the best way to prevent and treat various chronic diseases. Winter swimming makes blood vessels contract and expand strongly, enhances the elasticity of blood vessels, promotes the smooth flow of qi and blood, accelerates metabolism, accelerates the excretion of toxic substances in the body, and makes blood relatively clean. Many elderly people who insist on winter swimming have improved or even recovered their abnormal blood pressure, blood lipid and blood sugar.

Winter swimming significantly increases the amount of human immunoglobulin and greatly enhances immunity. It has good curative effect on chronic bronchitis, gastrointestinal diseases, asthma and arthritis. People who insist on winter swimming exercise seldom catch a cold. The intense cold stimulation of winter swimming greatly enhances people's excitement during the day, which can effectively prevent neurasthenia and improve diseases such as insomnia.

In terms of mental health, people who swim in winter are not afraid of cold, have brave spirit and will to overcome difficulties, and are generally cheerful and optimistic. The intense cold stimulation of winter swimming significantly enhances the function of human endocrine system, makes the skin elastic, has a good appetite, is full of energy, has a rosy complexion, rarely grows senile plaques, and can prolong life.

People who should pay attention to winter swimming are warm-blooded animals and have a gradual adaptation to the cold. In order to avoid injury and even personal safety, we should pay attention to the principle of gradual and persistent winter swimming during exercise. We should follow the gradual movement from summer, autumn to winter. After a long period of intermittent winter swimming, the first winter swimming should be resumed according to the principle of less first and more then gradual recovery.

Try to enter the water around noon, take off your clothes and do some preparatory exercises before entering the water, and wet your hands, feet, chest and back with cold water to lower the skin temperature, so that the gap with the water temperature before entering the water is as small as possible; After coming out of the water, quickly dry your body until your skin is red and hot, and then do some exercise before dressing to raise the skin temperature as much as possible to prevent the "cold" from catching cold in your clothes. Winter swimming doesn't emphasize speed and distance like general swimming. Don't swim blindly, and don't go into the water repeatedly.

It is not advisable to stay in cold water for too long, otherwise you will be unconscious and even life-threatening. The winter swimming time is closely related to the water temperature, according to the principle of "the water temperature does not exceed 1 min". When the water temperature is 10℃, the residence time in the water shall not exceed 10 minute; The water temperature is 5℃, and the residence time in the water is no more than 5 minutes. Grasp the time in the water, feel the skin slightly warm and not cold, achieve the exercise effect of strong cold stimulation, and ensure the comfort and personal safety after going out of the water. Patients with severe heart disease, hypertension, arthritis or infectious diseases, mental illness, etc. It's not suitable for winter swimming, so don't take part reluctantly in case of danger.