[Miles Roberts]

This might not help you guys, but I've had experience with headaches caused (I think) by neck stiffness. The thing that works best for me is lacrosse ball work on my upper back. I mean dedicate some time, 15-20 minutes, a few times a day. I work hard to get deep into the muscles that run along the spine, from about the bottom of the shoulder blade up to the base of my neck. For me, it helps to lay on the lacrosse ball on the gym floor and move around very slowly cautiously. When its really bad, I'll put a kettlebell on my chest above the ball to increase the pressure on whatever muscle is getting worked. Oddly, massaging/stretching my neck seems to do nothing at all to cure it, but this helps.