Many people have the experience of taking a cold bath all the year round. Some people think that taking a cold bath in winter is also very cold, which is probably similar to swimming in winter and plays a similar role. This is also a misunderstanding of winter swimming. A cold bath is different from a winter swim. First of all, when taking a cold shower, if tap water is used, the temperature of tap water is generally above 10℃, and the temperature in the shower room will be higher than that outside. When taking a bath, only a thin layer of cold water flows on the skin surface, which makes people's body temperature more adaptive. In addition, people often wipe with towels when taking a cold bath, which will make the whole body warm faster, while in winter swimming, the water temperature is only a little higher than freezing point at the coldest time. A cold bath only touches the skin, or some muscles, while a winter swim will make people feel that it will penetrate the cold into your skin and muscles and penetrate deep into your bones, which is exactly the case. Therefore, after the winter swimming, people will have a particularly refreshing feeling, which is irreplaceable by any kind of exercise. Therefore, compared with winter swimming, cold water bath has different effects on both feeling and physical exercise. However, people who have taken cold showers adapt to winter swimming faster than the average person. Many people who have taken a cold shower before have this experience.