Most of the tissue in the neck and exteding into the upper back is connected to the walls of the sinus cavities. Stretching the jaw, neck and shoulders/upper ba

Most of the tissue in the neck and exteding into the upper back is connected to the walls of the sinus cavities. Stretching the jaw, neck and shoulders/upper back does a good job of massaging the interal parts of the sinuses that are unrechable otherwise. Feels really good after you hydrate them, from a shower, and you might loosen and expell some nasty snot that could be draining your immune energy!