Unconscious twitching during sleep may have the following reasons: First, lack of exercise and poor physical fitness is also one of the reasons for twitching. Second, the body loses a lot of calcium, and calcium deficiency also easily leads to convulsions. Third, some people have underlying epilepsy. Fourth, mental stress, due to the nerves of the brain in a tight state, will produce convulsions. Fifth, before going to bed, muscle tension caused by exercise or some reasons, and after falling asleep, the muscles begin to relax, which will also produce convulsions. Sixth, sleep myoclonus. In ordinary life, we should pay attention to: first, do not eat, spicy and stimulating food. Second, quit smoking and alcohol. Third, avoid strenuous exercise, keep a good rest and a relaxed mood.