Insomnia is a common clinical symptom, the causes of insomnia are mainly the following: 1, psychological factors, such as work stress, encountered things that do not go well, too much mental tension, anxiety, depression, overwork, etc. The above adverse factors will cause brain cell activity, brain nerve excitation, if not properly adjusted before going to bed will appear insomnia, poor sleep quality and other symptoms. The above adverse factors will cause brain cells active, brain nerve excitation, if you do not do a good job of psychological regulation before going to bed will appear insomnia, poor quality of sleep and other uncomfortable symptoms. 2, suffering from certain diseases, such as hyperthyroidism, etc., hyperthyroidism is due to hypermetabolism caused by the common clinical symptoms of increased heart rate, insomnia, agitation and other symptoms. Taking certain foods or drugs can also cause insomnia symptoms, such as alcohol, coffee, caffeine and so on. Don’t stay up too late, avoid overwork, and don’t have too much psychological pressure. Have a calm mind before going to bed and don’t think too much.