Shaking a little while sleeping is myoclonus. The involuntary twitching of a part of the body after falling asleep is found by others, some people shake a bit themselves will wake up because they are not fully asleep, involuntary shaking is physiological, no clinical significance, consider related to over fatigue, mental tension, stress. If the shaking occurs continuously, more and more frequently, the amplitude is getting bigger and bigger, and the duration is prolonged, consider whether it is epilepsy, and go to the neurology department to do EEG and so on to confirm the diagnosis. Sleeping muscle spasms are considered to be hypocalcemia, and when the neuromuscular excitability increases with low calcium, the muscles contract, leading to the occurrence of muscle spasms. Mainly muscle twitching, hands and feet occur more often, it is recommended to check the blood calcium index, calcium supplementation treatment, eat calcium-rich food, such as soy products, dairy products, etc.