Have you ever slept with a sudden body shaking experience, but never understood why sleep body shaking, sleep because the amplitude of the respiratory rate is greatly reduced, the brain decided that the body is dead, so send a hint to make the body wake up. The first hypothesis is that the sudden shaking in sleep is called “muscle jerk”, because the brain thinks the body is dying when the breathing rate decreases too much during sleep, so it sends a pulse to wake up the body, indicating that your body is not functioning very well at this time. The second hypothesis is that it is a glitch in the brain’s work. When 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 for a dangerous message about the body’s whereabouts, thus mobilizing the motor system to protect itself, resulting in a muscle twitch. It is also popularly believed that sleeping stirrups are growing taller. Both of these views have no exact scientific basis. Sleep twitching is a kind of rapid involuntary muscle twitching that is not controlled by the will, which is a physiological reaction, which is the same as eyelid fluttering and hiccups, and may be related to fatigue and mental stress before going to sleep, and the nerves of the brain are in a tight state, so it may cause twitching. Or exercise before going to bed or for some reason causes muscle tension, and after falling asleep the muscles start to relax, which can also cause twitching. There is no direct relationship with whether the body is healthy or not. The real reason is calcium deficiency If the body jerks and shakes frequently when sleeping, it may be related to the lack of calcium in the body. Low calcium will increase neuromuscular excitability, causing muscles to contract and twitching to occur. Tips Occasional jittering is not harmful to the body, do not need to pay too much attention; if caused by calcium deficiency, usually more calcium-containing foods, such as milk, soy products, etc., appropriate supplementation of calcium tablets, foot soak before bedtime, help to relieve.