Ghost pressing on the bed means that you suddenly feel conscious but unable to move your body while sleeping. In fact, you are suffering from a sleep disorder. The phenomenon of "ghost pressing on the body" is a symptom of sleep paralysis in sleep neurology. When the patient is sleeping, he is half awake and half asleep. The brain waves are the amplitude of wakefulness. Some people also have sleep paralysis. There are also hallucinations of images, but the muscle tone of the whole body is reduced to a minimum.