1, the amount of exercise in winter swimming should be controlled within a safe and effective range. Don't blindly compare the length and speed of winter swimming in the water with others. If you spend too little time in the water and don't get enough stimulation, you can't achieve the effect of exercise. Generally speaking, when you first enter the water, your body temperature drops quickly and you will feel cold. Then your skin will turn red, your body temperature will start to rise, and you will feel warm and comfortable. At this time, you will feel more relaxed and comfortable when you go ashore from the water. If you continue to receive cold water stimulation until your body is cold and your hands and feet are numb, this is already a manifestation of excessive exercise and it is very easy to damage some organs and tissues.

2. Although winter swimming has many benefits and great fitness value, it not only needs low-temperature cold water stimulation, but also needs water exercise, which is very stimulating to the human body. Therefore, winter swimming must strictly follow the scientific method. If you don't have a physical examination all the year round, you don't know your physical condition and illness, you don't accurately grasp the relevant knowledge and precautions of winter swimming, or the amount of exercise and exercise methods are improper, not only will it not bring the effect of exercise, but sometimes it will lead to diseases and even accidents.