Have you ever had the experience of suddenly shaking your body while sleeping, but never understood why your body shakes when you sleep, because the amplitude of the breathing rate is greatly reduced during sleep, the brain decides that the body is dying, so it sends a hint to make the body wake up. The first hypothesis is that the sudden shaking during sleep is called “muscle twitching”, and because the amplitude of the lowering of the respiratory rate during sleep is too large, the brain thinks that the body is about to die, so it sends out an impulse to make the body wake up, which indicates that your bodily functions at this time are not very good. The second hypothesis suggests a glitch in the workings of the brain. As you fall asleep, the muscles throughout your body begin to relax, and the lack of a feedback signal causes the brain to mistake this muscle relaxation as a message of danger from the body’s whereabouts, and thus mobilizes the motor system in order to protect itself, resulting in a muscle twitch. Folklore is also rumored that sleep stirrups are growing taller. Both of these views, there is no exact scientific basis, sleep twitching is a kind of rapid involuntary muscle twitching without volitional control, belongs to the physiological response, which is a reason with eyelid fluttering, hiccups, may be fatigued before going to sleep with the mental stress, the brain’s nerves in a state of tension, so it may cause twitching. Or before going to bed exercise or some reason cause muscle tension, after falling asleep, the muscles begin to relax, can also cause twitching. It is not directly related to whether the body is healthy or not. The real cause is calcium deficiency If you experience frequent body twitching and shaking while sleeping, it may be related to calcium deficiency in your body. Low calcium will increase neuromuscular excitability, leading to muscle contraction and twitching. Tips occasional shaking, no harm to the body, no need to be too concerned; if caused by a lack of calcium, usually more calcium-containing foods, such as milk, soy products, etc., the appropriate supplemental calcium tablets, soak your feet before going to bed to help alleviate.