The cause of cold in winter is usually due to the change of temperature, which leads to virus infection. As the saying goes, the spring is chilly and the autumn is crisp. The concept that many young people have been pursuing is elegance, not temperature. When the temperature difference changes in winter, the human body is easy to catch cold. Catch cold will reduce the local immunity of respiratory tract, and the virus will easily invade respiratory tract, which will lead to a cold.

Common ways to prevent colds are as follows:

1, pay attention to keep warm: change clothes in time, keep healthy, remove the incentives that lead to colds, and it is not easy to catch colds;

2, avoid fatigue and staying up late: fatigue and staying up late will also make the body's immunity low, leading to virus infection. Because it is cold in winter, it is easy to catch cold. If fatigue and catching cold work together, it is easier to catch a cold.

3. Strengthen physical exercise: Strengthening physical exercise is an effective way to improve immunity. Studies have proved that aerobic exercise can improve human immunity.

4. Wear a mask and wash your hands frequently: In daily life, especially when going out, you must remember to wear a mask, wash your hands frequently when you have time, and keep the indoor air fresh, which can reduce the impact of the flu on yourself.