During the act of sexual intercourse, the body's blood circulation accelerates, manifesting as elevated blood pressure, increased heart rate, enhanced gastrointestinal motility, flushed skin, and open sweat glands leading to profuse sweating. Therefore, after sexual intercourse, one may feel a sense of restlessness and a desire to drink water due to thirst. Some people rush to drink cold beverages or take a cold shower to remove sweat, which is detrimental to health.
Because during sexual activity, the blood vessels in the gastrointestinal tract are in a dilated state. Before the mucosal congestion of the gastrointestinal tract returns to normal, consuming cold beverages can cause the mucous membrane to be suddenly exposed to cold, resulting in certain damage, and may even cause gastrointestinal discomfort or cramps. Similarly, during sexual intercourse, the skin's blood vessels throughout the body are also congested and dilated, with sweat glands and pores open to expel sweat. If exposed to a cool breeze or taking a cold shower at this time, the skin's blood vessels will constrict suddenly, causing a large amount of blood to flow back to the heart, increasing the burden on the heart. At the same time, it can also cause the sweat gland pores to close abruptly, leading to sweat retention in the glands, which is harmful to health.
If you feel thirsty, it is advisable to first drink a small amount of warm water. About an hour after intercourse, when the blood circulation in all the body's systems and organs has returned to normal, it is more appropriate to drink cold beverages or take a cold shower.