1. In terms of diet, you should eat more moist food, such as Chinese cabbage, which contains a lot of vitamins and cellulose and is very nutritious. In winter, Chinese cabbage is very helpful to replenish water in our body and improve our immunity.

2. And in the cold winter, people are prone to catch a cold and cause a series of respiratory infections, so sometimes we should wash our face with cold water, which has an adaptation process for our respiratory tract and lungs, which can make them better resist the cold.