Don't do this to keep warm! Most people take

As early winter approaches, the temperature drops sharply and people begin to adopt various measures to keep warm. Little do people know that many cold prevention measures actually have some problems to some extent.

Sleeping with head covered

When people cover their heads while sleeping, they continuously exhale carbon dioxide, which is completely concentrated in a small space formed by the quilt. The oxygen concentration continues to decrease, and the human body naturally emits humid heat during the entire sleep process. In this way, the air in the quilt is quite humid and dirty. If you sleep with your head covered for a long time, your brain will be severely deprived of oxygen. You will not have the energy to work the next day and you will become groggy.

Correct way: Make sure to keep your face exposed when sleeping so that your nasal cavity can breathe normally during sleep.

Layers of wrapping

Clothes themselves do not generate heat, they just retain it. If the thickness of the air layer exceeds 1.5 cm, air convection will increase, heat will dissipate faster, and the warmth retention will naturally decrease. Moreover, if you wear too many clothes, the body's own temperature regulation function will decrease, making you more likely to catch a fever and catch a cold.

The correct approach: Choose light and warm down jackets or leather jackets that can withstand cold winds for winter. You can wear a slightly loose and soft sweater inside, but don’t make the collar too tight, otherwise it will easily cause insufficient blood supply to the brain.

Cover your mouth and nose

If the scarf is wrapped around the mouth, when the person breathes, the tiny wool fibers and bacteria will be inhaled into the lungs, causing respiratory infections. Many people also wear masks to keep warm, but if you wear a mask all day, the mucous membranes of the nasal cavity and the entire respiratory tract will not be exercised, and the ability to handle cold air will be artificially weakened. If you get a little cold, you will be more likely to catch a cold.

The correct way to do it: When wearing a scarf, your mouth and nose should be exposed to keep breathing unobstructed; if the air pollution is not serious, try not to wear a mask.

Air conditioning always on

Although air conditioners can bring warmth to people in winter, there are bacteria and dust accumulated inside air conditioners, especially those in offices. When the air conditioner is turned on, these substances naturally enter the room with the air and are inhaled by people. Some people with weak constitutions may develop respiratory diseases such as tracheitis, rhinitis, etc., and dry air can also damage the skin.

Correct approach: When using air conditioning, you can place a humidifier or a basin of water in the room to keep the room moderately humid. The indoor temperature should be adjusted appropriately and the temperature should be gradually increased. When the temperature is adjusted to a suitable level, you should take off your outer clothes; if you want to go out, you should gradually adjust the temperature to 15℃. Do not leave the air-conditioned room immediately, so that your nasal cavity can have time to adapt to the air temperature. The best sleeping temperature at night is between 15 and 18 degrees Celsius. Families with patients suffering from colds or other infectious diseases should not use air conditioners.

Reduce exercise

Due to the cold weather in winter, people are reluctant to go out for exercise. In fact, the colder it is, the more you should exercise, because exercise is the best way to drive away the cold. It can also enhance disease resistance and reduce the occurrence of disease.

Correct approach: Keep exercising even in winter, you can choose jogging, cycling, Tai Chi, etc. You can also choose indoor fitness, such as aerobics, table tennis, bowling, etc.

Keep doors and windows closed

Sleeping with doors and windows closed in winter will indeed reduce air convection and increase indoor temperature, but the resulting poor air circulation is more harmful. According to experts, the human body produces more than 500 chemical substances during metabolism, of which 149 are discharged from the respiratory tract. As a result, the air contains a large number of bacteria, viruses, carbon dioxide and dust particles, which affect the respiratory tract. Therefore, those who close the windows and sleep in often suffer from colds, coughs, pharyngitis, etc.

Correct approach: Don’t keep doors and windows closed all day just because it’s freezing outside. Open windows frequently to keep air circulating. In winter, the windows should be opened 2 to 4 times a day, each time for about 10 minutes. In particular, the patient's residence should be ventilated frequently.

Drinking to keep warm

After drinking, peripheral blood vessels such as the capillaries in the skin expand extensively, and heat is dissipated outward through the skin, so people will feel warm skin. However, alcohol is different from energy substances such as protein, fat, and carbohydrates. It does not generate much heat. Therefore, after drinking, the body's abnormal heat dissipation will cause a large amount of heat to be lost, and the gentle feeling will eventually be replaced by cold. Therefore, drinking alcohol cannot keep you warm; the more you drink, the colder you will feel.

The correct approach: There is an old saying in my country: "Warm after a meal, cold after drinking." It is referring to white wine. Among all types of alcohol, rice wine has the best effect of keeping out the cold, especially warm rice wine, which can promote blood circulation, enhance metabolism, and has the effects of nourishing blood and beauty, activating blood circulation and dispelling cold, and activating blood circulation. It can effectively resist the stimulation of cold and prevent colds.

Room temperature is too high

If the room temperature exceeds 22℃, your body will feel uncomfortable. High temperature leads to dryness in the indoor environment, which reduces the resistance of the human respiratory system and can easily cause acute pharyngitis, etc. For people who need to go out frequently, too high room temperature will cause a large temperature difference between indoor and outdoor, which will reduce their resistance, make them more susceptible to upper respiratory tract infections, and increase the probability of sudden attacks of cardiovascular and cerebrovascular diseases. For the elderly with poor resistance, it can even cause pneumonia. In addition, as room temperature rises, the human body's oxygen consumption increases, making it easy to become tired and sleepy.

Correct approach: The room temperature should be between 18 and 22 degrees Celsius. When the room temperature is high, you need to increase the indoor humidity by placing a pot of water and plants in the room, or you can use a humidifier. Windows should be properly ventilated and should be opened for at least 30 minutes each time. Usually drink more water and eat more fruits.