Sub-occipitals strap the head on to the first 2 vertebrae. They have a direct bearing on and are strongly affected by the atlanto-occipital joint and the atlanto-ondontoid joint.
Upper cervical function and alignment strongly influences muscle tension, pain patterns, visceral function and postural alignment throughout the body. This area should be addressed early in the session so that other areas respond well and have longer lasting results.
Before directly using any muscle work, gentle mobilization of the joint can be very effective in making the work less painful, quicker and longer lasting.
This post has a routine for treating the area with joint mobilizations and then an NMT protocol.
and some related posts…