Sudden shaking of the body during sleep is a common physiological phenomenon, and is generally known as prodromalgia. When the body jerks, it is accompanied by a feeling of free falling or stepping on air, and it is easy to wake up, but you can fall asleep again soon. Sleeping muscle twitching is usually due to abnormal excitation of motor nerves, causing a transient spasm of the leg muscles or muscle groups, which may be related to overexertion or excessive exercise before bedtime, and generally has no adverse effects on the body. If the phenomenon of sudden shaking of the body during sleep occurs frequently, one should also be alert to hypocalcemia, epilepsy and other diseases. Patients can observe whether there are other abnormal symptoms, such as numbness of hands and feet, and disturbance of consciousness. If necessary, visit a neurologist to clarify the specific cause through professional examination by a doctor and then take appropriate treatment measures.