Being bitten by a ghost at night is just a superstition and has no scientific basis. In fact, when people are asleep, the body is relaxed and the muscles are relaxed, including the knees. In this case, there may be some feelings or micro-movements, but it is not the cause of being bitten by a ghost. This feeling is caused by the influence of the surrounding environment, personal sleeping posture habits or some physiological reactions of the body.

In order to maintain a good sleep quality, we should try to maintain a comfortable sleeping position, use appropriate mattresses and pillows, avoid stress concentration in body parts, and maintain a good sleeping environment.