For a long time I've suffered from back pain, neck pain and pain around the eye--all on the right side. Just recently I found out that I can make the facial pain immediately disappear (during the stretch) if I push my chin/head back (still looking forward), and tilt my head the side about 1/3 of the way to the shoulder. I've noticed that if I tilt my head more than that, I lose the helpful stretch and just feel a stretch on the side of my neck).
I've done all kinds of supposed scalene, levator scapulae, and trapezius stretches in the past, with no results. But this chin-back-side-tilt stretch seems to really help. So what muscles/anatomy am I specifically targeting with this stretch?