Analysis:

1, the cold shower should start when the temperature is high, and keep exercising every day and persevere. The time of each cold bath can be long or short, depending on the comfort.

2. The methods of cold water bath include brushing teeth, showering, bathing and swimming. A common method is to combine shower, bathing and brushing your teeth, but before adopting this method, you should have a physical examination and take a cautious attitude.

3, cold bath is best in the morning, not after sweating. When taking a cold bath, you should be fully prepared for your body, starting from the limbs and then transitioning to the trunk and head. The cold water bath should end before the cooling period. After taking a cold shower, dry your body with a towel and keep warm.

4. If conditions permit, cold water bath and hot water bath can be combined, which increases the influence of water temperature change on human body and is more conducive to the improvement of body resistance.