There are various reasons for sudden shaking of hands and feet while sleeping, such as poor sleep quality, lack of calcium in the body, excessive stress, excessive exercise, neurological diseases, etc. Poor sleep quality can easily lead to sudden twitching of hands and feet, mainly because the nervous system is still working when people are sleeping, and when patients are stimulated in some way while dreaming, the nerve center will react and show sudden twitching of hands and feet. Calcium deficiency in the body can also lead to body twitching during sleep, mainly seen in adolescent children. If the body is too stressed and overworked during the day, the body’s nerves are still in an excited state when resting, which can also lead to sudden twitching and shaking of the hands and feet during sleep. Excessive intense exercise can also lead to the symptoms of sudden shaking of the hands and feet during sleep, and patients suffering from neurological diseases, due to the problems of the nervous system can also easily lead to shaking and twitching of the hands and feet during sleep.