The heat is difficult. Because, people have tried their best, but you just feel uncomfortable for a while, and you are not cool for a while, causing a whole body disease. The following "eight inappropriate", please:
One is not suitable: turn on the air conditioner and blow the cold air.
Air conditioning provides a comfortable environment for people, but it is not a natural state after all. Air conditioning can make air flow and vibrate frequently, and the result is just like noise, which will damage people's nervous function. In addition, indoor air is recycled, and after repeated filtration, the negative ions in the air are obviously reduced, and there are too many cations, which not only affects the cleanliness of the air, but also affects the normal physiological activities of the human body. Living in an air-conditioned room for a long time will make people feel headache, dizziness, insomnia, gastrointestinal discomfort, fatigue, fatigue, cold-like symptoms, and even reduce the anti-infection ability of the human body. This is "air conditioning disease". Because low temperature is most likely to cause autonomic nervous system disorder in women, women are particularly prone to air conditioning disease. To prevent air-conditioning diseases, negative ion generators can be equipped indoors to make up for the shortage of air conditioning; It is best not to use air conditioning in a room that is neither too hot nor too cold. The use time should not be too long, and it is not appropriate to sleep with the air conditioner on all night; Don't adjust the indoor temperature too low or too high, so as not to be too different from the outdoor temperature; The room should be kept clean and hygienic, and smoking is prohibited indoors.
Second, it is not suitable: the electric fan blows directly on the human body.
Electric fans make people cool, but if they are turned on frequently, they will cause a series of symptoms such as sneezing, runny nose, fatigue, headache, dizziness, insomnia, shoulder pain and loss of appetite, which is called "fan disease". The key to prevent fans from getting sick is to use fans scientifically. First of all, the use time should not be too long, and it is appropriate to reach 1 hour; And the speed should not be too fast; Secondly, the electric fan should not blow directly at the human body, nor should it be too close. After blowing for a period of time, it is necessary to change the position of the fan or change the orientation of the human body to avoid local cold for too long; Third, don't sleep with the electric fan on. When the temperature is too high, you can only shake your head and control it regularly. When you sweat a lot, don't sit still and blow. In addition, the elderly and infirm, children and patients with chronic diseases, colds and arthritis should try not to use electric fans.
Three unfavorable: cold water to wash feet to cool down.
The summer heat wave attacks people, and some people who wear light sandals and slippers like to wash their feet with cold water. After washing, they feel much cooler, but doing so often is harmful to their health.
Medical research has confirmed that human feet are the farthest branches of blood vessels; The fat layer of feet is thin and the heat preservation is poor; The skin temperature of the sole of the foot is the lowest part of the whole body, which is easy to catch cold. If you often wash your feet with cold water in summer, your feet will get cold further, and then a series of complex pathological reactions will be caused by vascular conduction, which will eventually lead to various. In addition, because the sweat glands on the soles of the feet are relatively developed, suddenly washing feet with cold water will lead to the sudden closure and blockage of pores, which will cause perspiration dysfunction after a long time. Especially after the sensory nerve endings on the feet contact with cold water, the normal vascular tissues contract violently, which will lead to diastolic dysfunction for a long time, and induce limb arteriospasm, erythematous limb pain, arthritis, rheumatism and so on.
Four unfavorable: gluttony of frozen watermelon
It is hot in summer, and people like to cut watermelons and freeze them in the refrigerator before eating. However, long-term consumption of frozen watermelon has an impact on human health. Because after the cut watermelon is refrigerated, a film will be formed on the surface of the pulp, and the cold air will be absorbed by the pulp. When eating and drinking, the salivary glands, tongue taste nerves and periodontal nerves in the mouth will be paralyzed by cold, which will not only make it difficult to taste the sweetness of watermelon, but also hurt the spleen and stomach and cause pharyngitis. Children's digestive function is poor, and eating frozen watermelon can also cause anorexia, vomiting, diarrhea and other symptoms.
Five unfavorable: take a cold bath after sweating.
After sweating in summer, you can't take a cold bath immediately, because the temperature is high in summer and the body produces more heat. Evaporation of sweat and vasodilation of skin are important ways to dissipate heat. At the beginning, the human body was still in a state of vigorous metabolism, increased heat production and vasodilation of the skin. At this time, if you take a cold bath immediately, your skin will contact cold water and make your blood vessels contract through nerve reflex. In this way, sweating and heat dissipation will be blocked, but it will be difficult to dissipate heat, and your body temperature will rise. At the same time, the decrease of skin blood flow suddenly increases the blood flow back to the heart, which will increase the burden on the heart. When the body changes from hot environment to cold environment, it is too late to adapt and adjust, and it is often easy to catch a cold or cause gastrointestinal spasm. Muscle fatigue and tension increase after exercise, and then cold * * *, which may also cause cramps. Drink some salty boiled water after sweating in summer, then rest for about 1 hour, do some preparatory activities and take a cold bath. If conditions permit, it is best to take a warm bath.
Six is not suitable: juice drinks to take medicine.
In the summer heat, people are sweating like a pig, so naturally they want to drink some juice drinks to quench their thirst and prevent heatstroke and cool down. But many people may not know that juice drinks will have some subtle effects on the effects of some drugs, and some even have adverse reactions, which are harmful to human health. Fruit juice (especially fresh fruit juice) is rich in fruit acid. The main components of fruit acid are vitamin C and citric acid, which can lead to the early decomposition and dissolution of many drugs, which is not conducive to the absorption of drugs in the small intestine and leads to the decline of efficacy. Antibiotics and sulfonamides, such as erythromycin and chloramphenicol, are easily decomposed in acidic liquid, which not only reduces the efficacy, but also produces harmful intermediates, thus increasing the toxicity.