The Neck Theme
The multi-task of the bottle neck of posture
Using the mass of the head to compensate for any deviation in  the total body balance, while moving. The responsibility of turning the head's periscope of senses for controlling the environment in any unpredictable direction.             
 
Lack of cooperation from its routs in the stiff upper back is putting on the neck extensive stress, which its delicate vertebrae are not built for, and they tend to become chronically over stressed.
 
10 total body coordination movement processes