The inability to move the whole body during sleep is called sleep paralysis, which is caused by awakening from a period of fast-wave sleep. If a person wakes up from this period, the reduced muscle tone will continue to be brought to the awakening period, and the person will be unable to move his or her whole body even though the brain is awake, and cannot speak or move. When this happens, people often feel anxious and even have a sense of near-death terror. If someone can touch or shout at this time, the situation will disappear quickly, and most people struggle to relieve the symptoms through their own efforts. This situation is mostly related to excessive fatigue during the day and too tired, or have sleep deprivation, itself is actually not too serious problems, do not need too much anxiety and tension, pay attention to appropriate relaxation during the day, pay attention to rest.