In summer, some people like to drink a big mouthful of green tea to quench their thirst. Although green tea is not fermented tea, more retained within the fresh leaves of the natural substances, including tea polyphenols, caffeine can retain more than 85% of the fresh leaves, but it is also these natural ingredients, if consumed on an empty stomach, will have a negative impact on the human body. Fasting, some of the active substances in the tea will be combined with the protein in the stomach, the formation of stomach stimulation, easy to hurt the stomach. It will also dilute the digestive juices, affecting digestion. Meanwhile, on an empty stomach, some substances in tea are easily absorbed in excess, such as caffeine and fluorine. Caffeine will make some people panic, dizziness, weakness, and trance and other symptoms, medically known as “tea intoxication” phenomenon. In the summer season, when you come home drenched in sweat, you always want to take a cold shower. However, people who are not in good physical condition may have limited neck movement, numbness in the hands and feet and other symptoms. Especially when you just got home, it is best not to blow on the air conditioning or immediately take a cold shower. Cold water is easy to burst blood vessels. After the movement of people, blood flow fast, vascular diastole, cold water, blood vessels immediately contracted, while the blood is still flowing fast, blood vessel pressure immediately rise, when the blood vessel contraction is too fast blood vessels can not support the pressure will naturally rupture, and even life-threatening. Reminder, when people exercise body heat, do not use the whole basin of cold water, even if you like to take a cold shower, it is best to wipe with a wet towel, so that the body cooled down, the blood flow slows down. Do not cool under the eaves of the room, the aisle, should be far from the door and window cracks, to prevent the thief wind invasion and get heatstroke. Exercise is best in the early morning or evening, should not do too strenuous exercise, sweat too much, not only hurt yin, but also damage yang qi. If you think it is too hot to sleep, you can open the window in the morning after getting up to ventilate the room, and then pull the curtains before going to work. At night after work and then open the air conditioning (about 27 degrees), the room door to open each other ventilation to maintain the balance of the temperature difference between the rooms, to create a cool environment naturally conducive to sleep. During exercise, body temperature rises, sweating increases, if not timely hydration is easily caused by sports dehydration. Not only will cause muscle fatigue, but also lead to a decline in coordination, affecting the normal movement. Sweating should be moderate, if too much sweat, the body’s Yang Qi with the flow of dispersion, Yang Qi is not enough will be within the cold ambush in the body, a fall lead to cold and damp, easy to diarrhea, abdominal pain and other discomforts. So to appropriate exercise, morning running and swimming are good choices, each time as long as the exercise to a slight sweat, panting on it. Summer because of the high temperature, people like to eat light food, that this relief, prevent fire. But in the summer because of the high consumption of calories, it is more important to make nutritional supplementation comprehensive. Heatstroke patients should eat a light diet, but can be appropriate with fish, meat, eggs, milk, etc., to ensure that the body’s necessary nutrients or quite necessary. Cold drinks are a must-have to relieve heatstroke, but if long-term cold drinks do not leave the mouth, the stomach and intestines can not stand. A large number of cold drinks into the gastrointestinal tract, will interfere with the normal peristalsis of the stomach and intestines, leading to digestive dysfunction, resulting in functional dyspepsia, affecting the gastrointestinal blood supply, weakening the gastrointestinal mucosal barrier of the ability to repair themselves, and seriously will induce abdominal pain, irritable bowel syndrome and other discomforts. Suffering from coronary heart disease and hypertension patients should not drink cold drinks, because a large number of cold drinks will lead to vasoconstriction, so that blood pressure rises, coronary artery contraction will induce angina pectoris. In summer, it is best to choose warm water or cool water is appropriate. If you really want to try cold drinks, each time not more than 150ml (about one-third of the ordinary mineral water bottle), each time to eat ice cream, ice lolly no more than one appropriate.