In winter, some female friends wear drums, thinking that the more they wear, the better the warmth will be. In fact, this view is very one-sided, because the warmth of clothes is related to the thickness of the air layer inside the clothes. However, when the total thickness of the air layer exceeds 15mm, the air circulation in the clothes is greatly increased and the thermal insulation performance is gradually reduced. From the physiological point of view, if a person wears too many or too thick clothes, the heat will expand, which will further expand the blood vessels of the skin, thus increasing the heat dissipation and making it difficult to keep warm, and at the same time reducing the ability of the human body to adapt to the changes in environmental temperature.
Myth 2: licking your lips can keep your lips moist.
When the weather is cold, because the climate is dry, many people like to lick their lips, which easily leads to chapped lips, discomfort, pain and bleeding. Some young women, in particular, like to lick their lips with their own tongues, thinking that this can moisturize and make their lips more comfortable. But the result is useless, and because saliva is secreted by salivary glands and contains amylase and other substances, it will become very sticky on the lips. After the water evaporates, it will make the lips easier to dry and peel. If your lips are dry and uncomfortable, you can apply some lip balm instead of licking your lips with your tongue.
Myth 3: Wear a mask to prevent colds.
In winter, some people wear masks when they go out, thinking that they can prevent colds. In fact, this is not scientific, because the nasal cavity and the whole airway are covered by a large number of mucous membranes and submucosal capillaries. When the nose inhales cold air, the cold air will enter the lungs through this part and lower the body temperature. At this time, this physiological function of the human body is enhanced through exercise, thus improving the cold tolerance of the body. If you wear a mask all day and don't exercise, the mucous membranes of the nasal and respiratory passages will be affected and you will be more likely to catch a cold.
Myth 4: Warm hands and feet after freezing.
Many people will have this experience when they return to China in a cold environment. As soon as they enter the room, they will put their hands and feet close to the heater to keep warm. Although it is very comfortable for the body, if the process of alternating cold and warm goes too fast, it will be very unfavorable to their hands and feet. It is easy to get frostbite. The correct way is to rub your hands and feet first, so that the temperature of your hands and feet will naturally rise. When your face is rosy, move your hands and feet to the heater to keep warm.
Myth 5: Scratch itchy skin.
When the weather is cold, people often feel itchy around their skin because of the dry air. This situation must not be grasped by hand, otherwise it is easy to scratch the skin and lead to secondary infection. Common ways to prevent skin itching are to drink more water, eat more vegetables and fruits, and eat less irritating food and heavy-flavored food. You also need to pay attention to taking a bath and changing your underwear frequently. If severe itching occurs, some drugs can be used under the guidance of a doctor.
Myth 6: Sleeping with your head covered is the most comfortable.
On cold nights, many people like to sleep with their heads covered, thinking it is warm and comfortable. This is neither sanitary nor comfortable. Sleeping with your head covered will lead to lack of oxygen, which will lead to dizziness. Moreover, a large amount of water vapor exhaled from the mouth will quickly increase the humidity in the bed, quickly destroy the good climate in the bed, and make the skin very uncomfortable. Moreover, if the exhaled waste gas is sucked back by your body, it is not good for your health.
In winter, the body is weak. If you don't pay attention, it is likely to bring health problems. You must get rid of some bad habits that you are used to. Otherwise, if left unchecked, it will do great harm to the body. Moreover, winter has always been the prime time for health preservation. If you can't grasp the health care during this period, it will bring great trouble to your body in the future.