Wear a mask to prevent colds.

There are abundant blood vessels and spongy vascular network in the nasal mucosa, and the blood circulation is very strong. When cold air is inhaled into the lungs through the nasal cavity, it is generally close to body temperature. The cold tolerance of human body should be enhanced through exercise. If you wear a mask to keep out the cold, it will make your body delicate and more likely to catch a cold.

2

Sleep with your head covered.

Burying your head in the bed will make you feel warmer, but the oxygen in the bed will be less and less, and carbon dioxide and unclean gas will accumulate more and more, so people who sleep with their heads covered will feel groggy and exhausted after waking up.

three

Wash your face with hot water

In winter, sweat glands and capillaries contract under the stimulation of cold air. When it meets hot water, it expands rapidly, but after releasing heat, it returns to the state at low temperature. Such capillary contraction is easy to cause wrinkles on people's faces.

four

Drink to keep out the cold.

After drinking, I feel warm all over, which is the result of alcohol prompting the human body to emit primitive heat energy. After drinking, a lot of heat escapes from the body, causing goose bumps all over the body, leading to a cold after drinking.

five

Fire roasting with frozen hands and feet

Exposing hands and feet for a long time in winter causes blood vessels to contract and blood flow to decrease. At this time, if it is baked with fire immediately, the blood vessels will be paralyzed, lose their contractility, and there will be arterial congestion, telangiectasia, enhanced permeability and local congestion. Mild frostbite, severe tissue necrosis. So frozen hands and feet can only be rubbed gently. Let it slowly return to normal temperature.

six

Scratch itchy skin with your hands.

When you feel itchy all over because of dryness in winter, don't scratch it with your hands, otherwise it will easily scratch your skin and cause secondary infection. The prevention and control methods are to drink more water, drink more American ginseng tea, eat more fresh vegetables and fruits, eat less spicy food such as hot and sour, and drink less. Take a bath frequently and change your underwear frequently. Those with severe itching can take chlorpheniramine, phenamine and other drugs, and can also be treated with calamine lotion or Songqing ointment.