After drinking ice water and cold drinks for a long time, the body temperature drops rapidly, and the brain "mistakenly thinks" that the heat inside the human body has been emitted, so it "orders" to stop the heat discharge work. It leads to poor excretion of sweat gland pores, difficulty in heat dissipation, accumulation of residual heat, and easier heatstroke.

In addition, ice water and cold drinks easily irritate the throat and stomach, causing sore throat, hoarseness, diarrhea, abdominal pain and stomach cramps. Some women drink ice water and cold drinks for a long time, which is easy to cause menstrual disorder and dysmenorrhea, and may even bury the bane of infertility after marriage.

Experts remind that it is best to drink warm water in summer, and it is best to drink warm water at room temperature. Warm water can not only protect and moisten the throat and stomach, but also help to relieve summer heat and quench thirst.

At the same time, it is more scientific and reasonable to drink 8 cups of 200 ml water every day because of the large water loss in summer. Especially when you just get up in the morning, drink a cup of 250 ml warm water first, and then have breakfast half an hour later, which is very helpful for detoxification of kidneys and liver.