What do you mean, ghost bed?

Ghost press is clinically called sleep paralysis. Many people are aware of the influence of the ghost press, but their bodies can't move. Sleep paralysis patients are half awake and half asleep, and their brain waves are awake amplitude, and some image hallucinations may occur, but the whole body muscle tension is minimized, which belongs to sleep paralysis symptoms, and most of them appear in the rapid eye movement period of the sleep cycle, that is, the sleep cycle when sleep begins to dream.