Cold shower on the man will have a cold, pain in the precordial area and muscle aches and other hazards. 1. Cold: a cold shower can lead to men’s pore capillary contraction, so low immunity or poor resistance to cold body, easy to cause a cold. 2. precordial pain: when taking a cold shower, the stimulation of cold water leads to sudden contraction of blood vessels, resulting in a transient spasm of the coronary arteries, easily induced by men’s precordial pain. 3. Muscle aches and pains: men may experience joint aches and pains after a cold shower. Due to less soft tissue in the joints, insufficient blood supply and cold stimulation, the local area is more ischemic, which stimulates the nerves and causes symptoms of pain. It is recommended that people with poor health avoid bathing in cold water. For health considerations, the bath water should not be too cold or too hot, control at about 40 ℃ can be.