Chronic extension of the neck---leaning the head backward---for example, to better see a computer screen when wearing bifocals or graduated corrective lenses---is a common cause of headaches.
It causes tension in the suboccipital muscles along the base of the skull, compression at the occiput, and can result in an upward tilt of the posterior part of the C2 vertebra.
This combination is a reliable headache producer.
Watch out for this posture, and if you do get in trouble because of it, my gentle, precise adjustments with Activator Chiropractic Method can correct the area and bring relief.
