Keep your nose warm.

An important reason why cold weather is easy to catch a cold is that the nose does not keep warm well. The temperature of the nose is usually low, which is easy to reduce the resistance to infection. If the weather is too cold, put on a mask or scarf in advance to help keep your nose warm.

Shake hands as little as possible.

Handshaking will increase the body surface area and time of contact between the two sides, and increase the risk of infection by 10 ~ 20 times.

Wash clothes with hot water

If someone at home has a cold, you might as well wash clothes and sheets with hot water, which will help kill germs.