In winter, the northern indoor warm and dry, after the passion is easy to dry mouth, pay attention to do not pour cool water to make their own cooling, and do not immediately take a bath, because it is easy to hurt the kidneys. When sex is not only the sexual organs of both men and women are in a highly congested state, and many organs and tissues of the human body are involved in this special physiological process, such as breathing, heartbeat acceleration, the movement of the whole body muscles, the whole body skin vasodilatation, increased sweating and so on. Some people will be compared to sex is a small-scale physical exercise is not unreasonable. After sex shower, not only will make the body resistance to reduce, but also for the wind, cold and wet and other evil invasion of prostitution, so that the immune system is reduced, the blood does not run smoothly, circulatory disorders, thus inducing colds, arthritis and other diseases. From the theory of Chinese medicine, “the kidney collects essence”, due to the deficiency of the essence of the kidney after intercourse, the guard table is not solid, hair orifice open drainage, external evil take advantage of the deficiency and enter, resulting in a combination of disease, false and real mixed, the ancients also called the “folder Yin typhoid”, such as the treatment is not timely, can have a life threatening. Therefore, after sex, must not drink cold water, and not immediately with a shower. In addition, in addition to kidney injury, drink cold water immediately after sex, may also be sudden gastrointestinal discomfort or stomach cramps. Because the process of sex, the blood vessels of the gastrointestinal tract has been in a state of expansion, after the passion, gastrointestinal mucosa congestion has not yet returned to normal, then if you drink cold water will make the gastrointestinal mucosa suddenly shocked contraction by damage. If you sweat more after sex, you can use a dry towel to dry the sweat, the appropriate amount of supplemental warm water, about 1 hour, when the body systems and organs of blood circulation back to normal, and then bath or drink cold water is appropriate.