Recent studies have shown that prolonged stress can weaken the body’s ability to resist germs and make people susceptible to colds, resulting in the so-called cold body. Emotional colds can be caused by seasonal changes, but also by stress and negative emotions, and when the body is tense for a long time, it weakens the body’s ability to resist germs, making people susceptible to colds, forming the so-called cold body. The cause of the main rainy days is closely related to the less sunshine. In between our eyes there is a “third eye”, medically known as the pineal gland, the pineal gland can secrete a melatonin. The secretion of melatonin is regulated by light. When exposed to strong light, melatonin secretion decreases; in the dark light melatonin secretion increases. When there is a lot of melatonin in the body, it suppresses the hormones that regulate the activity and excitement of the body’s cells, resulting in a depressed mood. On the contrary, people will be relatively excited. Women themselves are more emotionally rich and sensual than men, so they are more sensitive to seasonal changes. The common cold is mostly caused by virus types such as rhinovirus and adenovirus, while influenza is caused by influenza viruses, such as influenza A, B and C viruses; the symptoms of influenza are more complicated than those of the common cold, and generally occur more often in winter or early spring.