Traditional Chinese medicine believes that milk tastes sweet and slightly cold, and has the functions of moistening lung and stomach, moistening intestine and relaxing bowels and tonifying deficiency. Li Shizhen, a great physician in Ming Dynasty, recorded in Compendium of Materia Medica: "Milk can cure nausea and heat, tonify strain and moisten large intestine, treat qi dysentery and eliminate jaundice." This shows that drinking milk will not produce hot air. From the point of view of nutrition, milk contains protein, fat, minerals and moisture, which have not caused the "excessive internal heat" in the theory of traditional Chinese medicine.

In addition, milk contains plenty of water, which is also a good source of hydration in summer. In the hot weather in summer, people will sweat a lot, and 75% of milk is water, and the protein and fatty acids contained in it are easily absorbed and digested by the human body. In short, drinking milk in summer can not only help the body replenish water, but also supplement some nutrients, which is still very beneficial to the health of the body.