The three days of the year are the hottest, humid and muggy days of the year. The so-called “volcano days” refers to the “three volcano days” of the lunar calendar, which is the hottest period of the year. This is the most difficult summer heat off of the year. The body is most afraid of 6 things 1, the cervical spine is most afraid of air conditioning, the fan to replace the weather hot natural many families are open for a long time with air conditioning, air conditioning can quickly cool down, but often blowing air conditioning will affect the sweating function of people. Sweating is the body’s self-regulation of the cooling process, long-term stay in the air-conditioned room, the body’s ability to regulate the temperature will be reduced, the central regulating capacity decreases, which can cause a variety of discomfort. In addition, the cervical spine blowing against the air conditioning, the surrounding soft tissues will produce lesions, the formation of chronic inflammation of the muscles and subcutaneous tissues, resulting in persistent neck spasms, back pain and other consequences. Therefore, it is best to turn on the air conditioner less and use a fan instead to cool down. You can also open more windows to accelerate air circulation also helps to cool down. Especially the elderly, due to the weakness of the body, the ability to regulate the temperature is limited, but also to blow less air conditioning, go out with a fan. Even blowing air conditioning, do not blow all day and all night, you can open for a while and then shut down, the temperature is not too low, to ensure that the difference between indoor and outdoor temperature does not exceed 7 ℃, while taking care not to let the air conditioner blow directly on the body. Shoulder back not directly to the air conditioner, if the temperature can not be self-regulation, you can put a shawl on the shoulder, and take a warm bath at night. 2, drink water most afraid of fast, green tea young and old salty appropriate high temperatures in the volcano, the body is prone to dehydration, so a lot of hydration is the best way to prevent heat stroke. However, many people are used to drinking water in large gulps. Drinking water too fast, water will quickly enter the blood, absorbed in the intestines, so that the blood becomes thin, blood volume increases, the heart is not good, especially those suffering from coronary heart disease will appear chest tightness, shortness of breath and other symptoms, serious may lead to myocardial infarction. Therefore, summer water can not drink too fast, a small number of times. Each time only drink 100 ~ 150 ml, the body absorbed better, but also can not be greedy cool, more than 10 degrees of warm water is best for the body. Drink water, you can choose to drink some green tea. Because the body loses not only water, many electrolytes will also be lost, green tea not only has the effect of removing heat and fire, which contains a variety of vitamins and minerals can also be a rapid replenishment of the body’s loss of electrolytes, and thus maintain the dynamic balance of body fluids. In addition, green tea can eliminate tiredness and refresh the mind. If you should not drink tea, you can add some salt to plain water, you can also eat watermelon, drink mung bean soup and other ways to replenish water, but mung beans are cold, for children, should not drink a lot. 3, the eyes are most afraid of the sun, physical sunscreen effect in the hot sun, the eyes are the most vulnerable organs. Experts reminded that the eyes like cool and afraid of heat, do not pay attention to sun protection, it is easy to premature aging, and cause all kinds of eye disease. If you want to go out from 10 a.m. to 4 p.m., be sure to physical sun protection, such as wearing sunglasses, hats or playing umbrellas, sunglasses color to teal, light green anti-UV effect is best; can eat more eye food, such as cinnamon, yam, carrots, dates, etc.; summer bacteria multiply quickly, try to rub the eyes with your hands; wash your face with running water, can reduce eye disease. 4, exercise the most afraid of early, swimming the most heat summer dawn early, many people go to the park early morning exercise. Early in the morning, the plant after a night of metabolism, absorb oxygen, exhale a lot of carbon dioxide, so that the trees and plants more places where the concentration of carbon dioxide increased. Research shows that summer air pollutants in the morning before 6 o’clock, burning coal and car exhaust emissions, such as nitrogen oxides, hydrocarbons and other harmful substances in the air gathered more, it is the peak of pollution, breathing these dirty air on the human body will have a harmful effect. In addition, before sunrise, because there is no photosynthesis, green plants near not only not too much fresh oxygen, but on the contrary, a large amount of carbon dioxide accumulation, which is not good for health. Therefore, the morning exercise time in summer should not be earlier than 6 o’clock. Summer human energy consumption, suitable for some “low-key” exercise, swimming is very good. Because the cooling capacity of water is 15 times higher than the air, the body can maintain a constant body temperature when swimming, not easy to heatstroke. 5, the home is most afraid of ash, playing weekly diligent summer heat, humidity, making it easier to attach dust in the air, into the human skin and body. As the naked eye is difficult to find, people are often negligent in cleaning, they float in the air for a long time, and a lot of attached to the surface of the items, becoming the habitat of dust mites and mold spores in the air. These dirty things will take advantage of the opportunity to enter the respiratory system, which in turn leads to asthma, rhinitis and many other diseases. It is recommended that the summer should increase the number of cleaning, two or three days to clean once. 6, gastrointestinal most afraid of cold, sleep to protect the abdomen Summer ice cream, cold drinks, frozen fruit, eat up that is a cool! But summer is also a high incidence of intestinal diseases, experts recommend that this season, eat less too cold things, especially when you get up in the morning and before going to bed at night. When sleeping, do not bare shoulders, to wear pajamas, so that you can protect the abdomen, to prevent “wind evil” into the body, and hurt the internal organs. It is important to note that it is not necessarily cool to wear less, when the temperature is higher than 37 degrees Celsius, but the skin can not dissipate heat, but also absorb the heat of the outside world, so, to a certain extent, men should not go out bare shoulders in summer, and women should not wear short skirts.