Misunderstanding 1: A lot of sweating and health On the one hand, sweating on the one hand can evaporate heat and keep the body temperature constant. On the other hand, it can discharge a variety of harmful metabolic wastes, such as lactic acid, carbonic acid, creatinine, urea and bacterial toxins. Therefore, as long as the summer weather can make some sweat, urinary fluency will not get sick. If there is no sweating, it is often a sign of the summer heat. The elderly sweat glands shrink, so it is easy to get summer diseases. So, why is sweating more bad? The reason is that the effect of evaporative heat dissipation is best with a small amount of perspiration; if large beads of sweat perish, its cooling effect is not good enough, injure the body fluid and vitality. Because a lot of sweat can lose many useful substances, resulting in the body's lack of potassium and sodium. According to the determination, sweat also contains zinc, copper, chromium, molybdenum, cobalt, iodine and other trace elements, as well as vitamins and other active substances, so excessive sweating will lead to dehydration physically weak. In addition, a lot of sweating can make the blood concentrated, blood viscosity increases, and there is a risk of thrombosis and myocardial infarction in arteriosclerosis. Therefore, when there is more sweat during the summer heat, add water and salt at any time. Three meals a week should eat more soup, eat more water and vitamin and potassium-rich fruits and vegetables, such as watermelon, cucumber, spinach, loofah and so on. Myth 2: Drink plenty of water after exercise Summer sports are bound to sweat a lot. If the exercise time is a bit longer, the body loses more water, and it will definitely feel thirsty. Some people drink plenty of water after exercise. One feels happy, and the other is that a large amount of drinking water can be used as soon as possible to supplement the body needs, so that fluid balance. In fact this is wrong. When people exercise, a large amount of blood in the body remains in the muscles of the extremities. If you drink a lot of water immediately after exercise, it will inevitably cause some of the blood vessels in the gastrointestinal tract to shrink rapidly, weaken the absorption capacity, and make people feel heavy and stuffy in the stomach, which will hinder the activity of the diaphragm and affect normal breathing. Therefore, after summer exercise, you should add some water, especially saline, and do not drink plenty of water quickly. Myth 3: Cool and cool During the sultry days, some people always like to see the back of the backbone, thinking that it is cool, but this may not be the case. From the physiological point of view, human body temperature regulation not only depends on skin evaporation, but also rely on skin radiation. It has been determined that 70% of human body temperature radiates, convections, and conducts heat dissipation in the air at an ambient temperature of 18-28 degrees Celsius. When the temperature reaches 35 degrees Celsius, body temperature relies on skin to evaporate. When the temperature continues to rise, the skin can not only fail Radiant heat radiation also absorbs heat from the outside environment. Therefore, if you are shirtless at this time, it is easy to absorb heat, not only not cool, but will feel even more hot. Misunderstanding 4: It is not appropriate to sleep late at summer Some people think that the temperature falls and sleeps later in the summer and can rest better on the second day. However, according to the human body's "biological clock" law, the best time to sleep is 22-23 hours, 5-6 hours in the morning is the "climax" of the biological clock, this time the best spirit of getting up. Therefore, you should still live on time in summer. Myth 5: Ventilation is Cool with Open Doors In the hot summer days, the outdoor temperature is high, and sometimes even the outside wind is hot. At this time, opening the doors and windows will make the indoor and outdoor temperatures as high. Therefore, in summer, if the outdoor temperature is high, you should close the doors and windows before the highest temperature of 14 o'clock, so that the indoor air temperature will remain low. When you open the windows and doors in the evening, the room will look cool.
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Summer health out of 5 common misunderstandings
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