the shoulder 'girdle' sits atop the ribs - by design.

... and yet this area is often glued together, the build up of fascia that is stuck from lack of movement builds and give the appearance of an armour.

Easily changed when the design is comprehended, think of this girdle 'sliding' over the ribs front and back, side to side.

Slowly the build up is released.
neck pain disappears, so too can headaches.