Sympathetic nerve is a kind of autonomic nerve, which controls our heartbeat, blood pressure, whistling, heartbeat, etc. People with autonomic dysregulation, that is, people with high sympathetic nerve activity, resulting in tight nerves or tight tendons, if tight in the chest, it produces chest tightness, chest tightness pain, so that cardiovascular delivery is poor; if tight in the heart, it produces depression, anxiety, nervousness, anxiety, etc., and feel stressed at all times. Human tendon tightness or sympathetic nerve activity is too tight. Habitual tendons tight people, easy to make the sympathetic nerve tight; conversely, sympathetic nerve activity of people, also easy to make the head, chest, heart tendons tight, each other have an impact. The general way to regulate the relaxation by drugs or by psychological counseling, or by religious power to reduce stress. The method of use depends on the individual situation, but the good effect is limited. The result of our research is that if the tendons are relaxed and relieved, the heart, chest and head are not tightened, and the sympathetic nerves are naturally relaxed. If the tendons in the head are relaxed and there is no pressure, the blood circulation in the head becomes very good, there is no pain, stroke and myocardial infarction are prevented, there is no imagination, there is better sleep, there is more memory, there is enough sleep, and the whole person is comfortable. By relaxing the tendons efficiently, some of the depression, bipolarity, lack of confidence in the future, and low mood caused by a tense heart can be improved quickly.