The desire to sleep is a neurological disorder in which the associated nervous system is involved, causing changes in its conduction processes and the occurrence of uninhibitable sleep. There are several sleep-promoting sites in the human brain, the most important of which is the ventral lateral part of the preoptic area. The supraoptic nucleus has fibers that project through other nuclei to the lateral hypothalamus and the ventral lateral part of the preoptic area, transmitting information about circadian rhythms to the wake-promoting and sleep-promoting brain areas and regulating the interconversion between wakefulness and sleep. Therefore, changes in any of the factors of sleep-wake transition can cause changes in sleep. If the stimulus from wakefulness to sleep is increased or the inhibitory effect is weakened, the person will show the desire to sleep. When people work under too much pressure, the spirit is in a high state of tension, or long-term nutrition supply, cervical spondylosis and other causes of insufficient blood supply and oxygen supply to the brain, the body is in a state of fatigue or other reasons caused by the increase of sleep stimulation factors received by the nerves in the brain, it will be manifested as wanting to sleep. In addition, various causes of blood stickiness, too much negative emotion, so that the cerebral cortex in a state of inhibition, will also lead to want to sleep. Therefore, if you always want to sleep, it is important to find the cause and intervene in time. It is usually believed that a positive attitude, healthy and moderate physical exercise, and a reasonable diet can effectively improve the symptoms of sleepiness.