How about a cold drink after exercise?

Strenuous exercise can raise the body temperature to about 39℃. Eating a lot of cold drinks at this time is a strong cold stimulus to the digestive tract, which will cause strong peristalsis of the digestive tract and produce abdominal pain and diarrhea. At the same time, the rapid change of heat and cold will cause the blood vessels in the stomach to contract suddenly, which will cause digestive and absorption dysfunction and lead to indigestion or other diseases. In addition, the throat may be congested after exercise, and excessive cold stimulation will cause sore throat and hoarseness. Therefore, it is not advisable to eat cold drinks immediately after exercise, and it is advisable to take a break before eating.

Experts suggest that it is best to use "heat" to quench your thirst in summer. Like drinking some hot tea. Because in fact, eating cold drinks can only temporarily lower the temperature and has no effect on quenching thirst. British scientists once chose a particularly hot day to measure the participants with an infrared temperature recorder. The results show that people who eat cold drinks can only reduce the skin temperature around their mouths, while people who drink tea can reduce the skin temperature 1℃~ 2℃ after 9 minutes. Because drinking hot tea can promote sweat glands to relax and sweat, and emit heat in the body, which can completely reduce the temperature of the skin surface.

But it is particularly important to note that you can't drink hot and cold drinks alternately. For example, some people just drink cold drinks, and then drink hot coffee, hot milk and so on. Moreover, this change of cold and hot is easy to stimulate their teeth and cause dental diseases. Moreover, alternating cold drinks and hot drinks is not good for the gastrointestinal tract, and it is easy to cause gastrointestinal dysfunction. So drink cold drinks and hot drinks separately, at least 30 minutes apart.