The most important internal organs of the human body are distributed in the upper body. If the weather is cold, the human body will react in self-defense, causing the capillaries in peripheral parts such as hands and feet to contract, giving priority to supplying blood and heat to internal organs, resulting in poor blood flow in peripheral parts, cold hands and feet, and even frostbite. Therefore, it is recommended to wear a vest in winter, which can effectively keep warm the important organs of the upper body.

Thickness of autumn clothes, 80d is the best.

D (Daniel) is the unit of fiber degree, and the grams of fiber can be weighed every 9 kilometers. 10d looks like ultra-thin stockings, while the thickness of 1600d is basically the same as that of ordinary cotton trousers. It is suggested that the fiber unit of trousers for winter and autumn clothes should be about 80d, with a certain thickness and good air permeability. If the weather is particularly cold, it is recommended to wear more 1 10d to prevent colds.

Eat something salty.

Insufficient salt intake will reduce the sodium content in the body, which will lead to hyponatremia in severe cases, affect blood circulation, make blood flow poor, and lead to body cold. So you can eat salt in moderation when it is cold in winter, but you can't eat too much. You can guarantee 6 grams a day.