If you’re suffering from neck and shoulder/upper back tightness on and off, you may not think much of it. You may take a pain killer or a muscle relaxant, do a couple of stretches and brush it off.
But you may just be making things worse as the on and off tightness and stiffness becomes on and off dull pain. The on and off dull pain becomes on and off sharp pain. The on and off sharp pain becomes persistent pain… and so on.
Usually the reason for muscle tightness or neck stiffness comes from a weakness and deep instability inside your spine which can be destroying your spine from the inside without your awareness.