The symptoms of body shaking while sleeping are caused by transient muscle spasms, caused by the following main causes: 1, when undressing, if the room temperature is too low, after being cold caused by muscle reflex muscle contraction appears body shaking symptoms. 2, hypocalcemia, mostly seen in pregnancy, lactation, children, the elderly, etc., calcium ions in the blood mainly to maintain muscle excitability, if the blood calcium ions reduced, can cause muscle excitability caused by body shaking symptoms. 3, epilepsy, epilepsy due to abnormal brain artery discharge caused by many types of epilepsy, such as petit mal seizures, seizures, epilepsy persistent status. The main reason for this is that it is not possible to get the most out of the problem. 3, epilepsy, epilepsy caused by abnormal brain artery discharges, many types of epilepsy, such as petit mal seizures, grand mal seizures, epilepsy continuous state, etc. Common clinical symptoms are limb twitching, foaming at the mouth, muscle spasms, etc. The presence of limb tremors may be caused by petit mal seizures, which are easily missed. Usually, strengthen nutrition, take appropriate calcium supplements and do not stay up late.