Insomnia refers to a subjective experience in which the patient is dissatisfied with the duration and/or quality of sleep and which affects daytime social functioning. Sleep is a physiological process that does not require attention, but needs to be maintained. Insomnia occurs at a high rate and can be caused by high levels of stress, psychosocial factors, chronic illness, etc. Why insomnia? Some people believe that psychological tension causes insomnia. So what is psychological tension? Psychological tension is unavoidable in people’s lives as a result of stressful stimulus stimulation acting on people. Psychological tension can increase alertness in order to be prepared for operations. In this respect, psychological tension is beneficial; however, on the other hand, a person is in a state of psychological tension for a long time, or the tension is so strong that it exceeds the ability to adapt, it may be damaged by this tension, leading to various disorders. Psychological tension can cause insomnia, it is certain, the tension is eliminated, sleep should be good. So why do some people still have insomnia after the tension is removed? This is physiological tension. Physiological tension mainly refers to the physiological state that is dominated by nervous tension. Nervous tension refers to the working state of the nervous system. Any stimulus may cause nervous tension, and nervous tension itself is an adaptive change. However, it may be due to various factors, and the degree of nervous tension gradually raised, gradually can not be normal relaxation, so as to affect sleep. We all understand the reasoning, but you give the nerve reasoning, it does not understand. It also requires a certain way to make the nerves relax. If the nerves are not relaxed, there is a problem with the quality of sleep. How to do it? We should not only reduce the influence of psychosocial factors, but also try to reduce the factors that cause nerve stimulation, avoid nerve tension or reduce the level of nerve tension, and improve the quality of sleep. If you have insomnia, it is important to exercise properly, ensure nutrition, live a regular life, avoid overwork, understand the causes of insomnia, and reduce the interference of psychological factors. Physiological tension is a process, and there is a process to relieve it. Psychological relaxation is not the same as physical relaxation, insomnia is originally a physiological process, once the attention, turn to the psychological process, the improvement is slow.