The body is usually weak and the resistance is low, so the slightest lack of attention can cause a cold. Under-dressing and failure to increase or decrease clothes according to the weather conditions also tend to cause frequent colds. At this time, you need to pay attention to keep warm, and also need to actively exercise and strengthen your body; you can properly supplement nutrition, and if your diet is not good, you can use medicines to strengthen your spleen and eliminate food and appetite; if you repeatedly catch a cold, you can also improve your body’s resistance by taking Chinese herbal medicines such as Tonic Zhong Yi Qi Wan and Yu Ping Feng San. Try not to go to places with a lot of people, especially during the flu season. It is also necessary to open the windows and ventilate at home to effectively prevent another cold.