The Dazhi point is an important acupuncture point on the Human Supervisory Vessel, located in the depression below the spinous process of the seventh cervical vertebra, at the highest point of the posterior cervical bulge when a person lowers his or her head. Because the Dazhi point is the intersection of the foot Sanyang meridian and the hand Sanyang meridian, regular moxibustion or acupuncture on the Dazhi point can enhance physical fitness, prevent colds, and strengthen the body, especially for people with insufficient Yang energy. In addition, the Dazhi point can also improve blood supply to the brain and increase blood flow, which is good for patients with frequent headaches and dizziness. The large vertebra is the meeting of all the yang, which can pass through all the yang energy and has a good effect of dispersing cold and removing dampness.