Muscles will jump may be due to excessive exercise, autonomic disorders and other physiological reasons, may also be due to neuronal lesions, hyperthyroidism and other pathological factors. 1. Physiological reasons: people who usually exercise a lot may cause muscle fatigue, resulting in involuntary discharge of some muscle fibers, causing local muscle contraction, which is observed by the naked eye as muscle throbbing phenomenon; in addition, a high degree of mental stress, irregular life and work may lead to autonomic nerve disorders, which may also cause the above symptoms. 2. Pathological factors: neuronal lesions can cause abnormal release or conduction of nerve signals, which may also cause symptoms of muscle throbbing, such as diabetic peripheral neuropathy, spinal cord cavernous disease, etc.; combined with hyperthyroidism, due to the elevated level of thyroid hormone in the body, there may be an increase in the excitability of the local neuromuscular junctions, which may also lead to the symptoms mentioned above. There may also be other reasons for muscle throbbing, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.