Some science behind the scenes
Back of neck [GV-16 FENGFU]
In the first place it is a focus of a number of key nerves and blood vessels. The central point of nervous control is the medulla. It combines a linking mechanism between the pons, the trigeminal nerve, the vagus nerve system [from the spinal cord] and the cerebellum nerves.
This diagram shows where the occipital nerve is.
Note that from the exterior of the skull it enters through the various muscles and tendons and joins with the nerves in the spinal cord.
But the back of the neck also has a number of key arteries and veins. In order to understand their purpose besides that of ordinary blood circulation you need to understand the functioning of the Cerebrospinal fluid system – see Cerebrospinal fluid.
The veins in the skull can be seen in the diagram to the left. The key trigger points are shown to the right. As you can see anything which encourages or promotes a better flow of blood in this area is going to help take away the blood from the brain and lower blood pressure.
Along with the blood are all the waste products that have accumulated in the brain and which have been swilling around the Cerebrospinal fluid. Thus when you stimulate these key points at the base of the skull and get the blood flowing better, it results in removal of ‘waste’ products – toxins, funguses, viruses, bacteria, harmful chemicals – anything that has seeped into the CSF from our nervous system
All these are integrated physical nervous systems.