The structural health of the neck is not just the maintenance of muscles, but the maintenance of;

(1) The Ligaments; That support the vertebrae but have a minimal blood supply, unlike muscle tissue. Ligaments are the tissue system that binds bones together supporting joints and regulating their range of movement. Being poor in blood supply, they do not heal easily and are prone to calcium deposits, causing wear and tear arthritic changes to the joints. This can cause friction against the wall of the Vertebral Arteries as they pass through the Cervical Vertebrae