Why is it easy to be red in winter?

1, alternating hot and cold

In winter, the weather is dry and cold, at this time, a lot of human heat energy is generated to protect the temperature balance of the human body. This alternation of cold and heat will make the human body unable to adapt. You blush when you are hot and cold.

We all know that when a person walks from a hot place to a cold place, that is, from a warm room to a cold outside, his face will suddenly be stimulated by cold. In order to protect himself, his body strengthened the blood supply to his face and contracted capillaries to resist the cold outside. The blood on the face turns red because of the contraction of capillaries, and the face will turn red.

2, psychological tension, excitement

According to psychology, the tension and excitement of the human body will cause the heartbeat and blood circulation in the body to accelerate, causing blushing. This is often when we are nervous and excited. At this time, we always unconsciously feel that our faces are red and hot. This is because when we are nervous and excited, our heart beats faster and our blood runs faster. However, because our face has no venous valve (a valve to prevent blood from flowing back) and the blood vessels are slack, our reaction is the most sensitive, so our face will turn red.

3. Thin facial skin

Everyone's skin thickness is different, which is why we see some people have red blood on their faces. In the cold winter, when the cold wind blows, it will directly stimulate the skin and produce a serious blush. In many pathological conditions, it will cause the skin of our face to become thinner. When the weather is cold in winter, the body will provide more blood for the face to protect itself, which will lead to facial redness. The lighter one is just a red face. If it is more serious, the face will be red, swollen and cracked. You can't handle it at will at this time. You'd better consult a doctor.

4. Physical and pathological manifestations

In medical diagnosis, there is a saying of "plateau red", which is mostly caused by poor heart function or poor respiratory and circulatory function. Chinese medicine believes that the function of heart, liver and lungs is not good, the heart can't deliver blood to the body in time, and the liver and lungs can't metabolize blood in time, which leads to redness and fever on the face. So some people blush in winter, but they just can't stand the cold. Once it is cold, their hearts and lungs will feel uncomfortable, and abnormal flushing will appear on their faces.