The most common cause of yawning is lack of sleep, some patients because of poor blood circulation, insufficient blood supply to the brain, liver, kidney disease and neurasthenia can also cause yawning. The most common reason for yawning is sleep deprivation, first of all, to maintain adequate sleep, but also to actively engage in aerobic exercise, so that more energetic, and thus less prone to yawning. Cerebral infarction patients, atherosclerosis patients due to blood vessel obstruction, or poor blood circulation, affecting the normal blood supply to the brain, the brain is in a state of hypoxia, the patient will appear frequent yawning performance. When the frequent yawning performance, a long time can not be relieved, it is recommended to consult a doctor in a timely manner, clear reasons, targeted treatment.