Taking a cold shower is equivalent to giving the body’s blood vessels to do gymnastics, because at the beginning of the wash, the human skin will contract, resulting in blood flow to the heart, and a few minutes later, the body adapted to the temperature of cold water, blood will flow back to the skin! One: this blood circulation can not only increase a person’s resistance, but also enhance the elasticity of blood vessels and prevent atherosclerosis. Cold shower will cause a faster heartbeat, blood flow, but also to help the body digestion, some gastrointestinal diseases and some auxiliary treatment of the role. Second: but need to pay attention to each cold shower before the first hand repeatedly rubbing the skin until the skin is red, hot; bath, you can first rinse the limb parts, and then rinse the other parts of the body to adapt! Third: angina patients after strenuous exercise cut can not take a cold shower, the water temperature should not be too low, generally between 5 ℃ ~ 25 ℃ is appropriate, the time in 10 to 15 minutes or so! Fourth: note that infants and older people over 60 years of age; women during menstruation and pregnancy; poor health or sick people; hypertensive patients; heart disease patients; and rheumatism, sciatica patients should not take a cold shower.