Is it a slight cold or a severe cold?

According to the records of meteorological data in China, slight cold is the lowest temperature solar term, and the temperature of great cold is lower than slight cold only for a few years. As the saying goes, March 9 is cold, and these three or nine days are in the slight cold solar terms. A slight cold marks the beginning of the coldest day of the year.

Winter 99 is counted from the day of winter solstice, and every nine days is a nine. After 199, count 29 until 998 1 day. This is a folk solar term used to reflect the temperature change in winter since ancient times. As soon as the winter solstice arrives, it will enter the so-called cold weather, and it will be warm after that.

Extended data:

Precautions:

Because of the low temperature at this time, the blood vessels on the body surface contract when they are cold, the blood flow is slow, the muscle viscosity increases, the ligament elasticity and joint flexibility decrease, and exercise operation is easy to occur. Warm-up activities can be done by jogging, stretching and flapping all the muscles.

In winter, nasal breathing should be adopted: because the nasal mucosa has blood vessels and secretions, it can warm the inhaled air, resist dust and bacteria in the air and protect the respiratory tract.

Baidu encyclopedia-slight cold