Sunshine and temperature change greatly in winter, which easily affects people's mood. When the night gets longer, melatonin in the blood lasts longer, which leads to symptoms of excessive sleep, laziness and irritability.

Prevention: realize that your mood is due to the change of weather season, establish a normal biological clock, do more outdoor sports or go out for a walk in the sun after winter. Try to extend the indoor lighting time and keep the indoor lights bright. Emotionally, cheerful and open-minded, giving people bright colors indoors or in clothes can bring people a good mood. Dietotherapy and medicated diet are beneficial to human health. Generally speaking, it is advisable to take food with the same origin as medicine, such as jujube, yam, ginkgo, coix seed, lotus seed, longan, walnut, auricularia auricula and lily. It can not only replenish qi and blood, protect the spleen and stomach, but also have nutritional value.