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Chapter 12 The room temperature of 18℃～22℃ is the least likely to catch a cold

In the severe winter season, what is the suitable indoor temperature?According to the physiological condition of the human body and the reaction to the outside world, 18°C ​​to 22°C is the most suitable temperature.If the room temperature is too high, the indoor air will become dry, and people's nose and throat are prone to dryness, congestion, pain, and sometimes nosebleeds.If the indoor and outdoor temperature difference is too large, people are prone to catch a cold and catch a cold in a sudden cold and hot environment.For the elderly and people suffering from high blood pressure, the temperature difference between indoor and outdoor should not be too large.Because the indoor temperature is too high, the blood vessels of the human body dilate. If you suddenly go outdoors, the blood vessels will suddenly contract, which will hinder the blood circulation in the brain of the elderly and hypertensive patients, and easily induce stroke.

In addition, the indoor temperature is too high, and the release of toxic gases from furniture, stone and interior decorations also increases. In winter, most rooms are closed, and harmful substances are more likely to accumulate indoors, affecting human health.

On the other hand, if the room temperature is too low, people will naturally catch a cold if they stay in it for a long time.Moreover, due to the stimulation of cold on the body, the excitability of the sympathetic nervous system increases, and the secretion of catecholamines in the body increases, which will cause the blood vessels of the limbs to constrict, the heart rate will increase, the heart workload will increase, and the oxygen consumption will increase. In severe cases, the myocardium will be ischemic. Oxygen, causing angina.

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During "sauna days", it's important to keep the room well ventilated.

However, due to the small outdoor wind force, which is not conducive to the diffusion of harmful substances, it is best to use forced exhaust equipment, such as ventilation fans, range hoods, etc.; turning on the dehumidification function of the air conditioner can reduce the indoor relative humidity, which has a certain effect on reducing pollution; At night or when the outdoor temperature is low, you can open the windows to ventilate; after entering the room and turning on the air conditioner in the car, do not rush to close the doors and windows, it is best to close them after a quarter of an hour, which will help reduce the concentration of indoor harmful substances and reduce their harmful effects on health. hazards.

(End of this chapter)