天气渐凉，有些人喜欢冷水锻炼，如坚持用冷水洗脸、冷水擦身、冬泳等，能提高身体对寒冷的适应能力，益于健康，减少疾病。冷水锻炼可预防呼吸道疾病，如感冒、扁桃腺炎、支气管炎、肺炎等。这是因为皮肤接触冷水后，体表的神经受到寒冷的刺激，通过反射使皮肤的血管急剧地收 Cold weather, some people like cold water exercise, such as adhere to wash your face with cold water, cold water, winter swimming, etc., can improve the body’s ability to adapt to the cold, good for health and reduce disease. Cold water exercise can prevent respiratory diseases, such as colds, tonsillitis, bronchitis, pneumonia and so on. This is because the skin contact with cold water, the surface of the nerve by the cold stimulation, the skin through the reflection of the blood vessels quickly