Exercise in winter, pay attention to keep warm and prevent freezing. The outdoor temperature is low in the morning, so you should put on more clothes, get ready for activities, and then take off heavy clothes and pants for exercise after warming up. Put on clothes and pants in time after exercise and keep warm. Especially after winter swimming, you should immediately dry your whole body with a soft and dry bath towel, wipe your red skin, keep warm and avoid the invasion of cold evil.