Don't drink cold drinks for breakfast.

The human body always likes a warm environment. When the body is warm, the microcirculation will be normal, and the transportation of oxygen, nutrition and waste will be smooth. So don't drink cold drinks and food when eating breakfast. You should eat "hot food" for breakfast to protect your stomach. In fact, stomach qi in TCM theory is generalized, not simply referring to "stomach", but including the digestion and absorption ability of spleen and stomach, acquired immunity, muscle function and so on.

Because in the morning and at night, Yin Qi has not moved away, and the temperature of the earth has not risen. The muscles, nerves and blood vessels in the body are still contracting. If you eat cold drinks at this time, it will definitely make the various systems in the body contract more and the blood flow will be worse.

Eat cold drinks carefully after exercise.

It is unscientific to eat a lot of cold drinks after exercise in summer. Strenuous exercise can raise body temperature. 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.

Cold drinks and hot drinks should not be drunk alternately.

Some people drink hot coffee, hot milk and so on right after drinking cold drinks. This cold and hot change is likely 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. Eating cold drinks 30 minutes before and after meals will dilute gastric juice and reduce the activity of digestive enzymes, which is not conducive to the digestion and absorption of food, thus endangering human health. Xia Zhishi has inflammation. Drinking a little salty boiled water before meals can supplement the salt and water needed by the body, and you don't have to eat cold food and cold drinks.

Take the food out of the refrigerator and don't eat it in a hurry.

After the gastrointestinal tract is stimulated by intense hypothermia, it is easy to cause physiological dysfunction. The temperature of human stomach is generally around 36℃, and the food just taken out of the refrigerator is only 2℃~8℃. It's best to put it off for a while and don't eat too much, especially for the elderly and people with chronic gastritis and indigestion.

Some people like to put watermelons in the refrigerator for a while before eating. In fact, if the watermelon is refrigerated for too long, a film will form on the surface of the pulp, and the cold air will be absorbed by the pulp. When eating this frozen watermelon, the salivary gland, tongue taste nerve and periodontal nerve in the mouth will be paralyzed by cold stimulation, which will not only make it difficult to taste the sweetness of watermelon, but also hurt the spleen and stomach and cause pharyngitis. Watermelon should be taken out of the refrigerator before eating.