By Andre Ferlo Your neck does a lot of work - the average adult head weighs eight to ten pounds. It is also quite vulnerable to damage. Whiplash occurs when the head moves violently first one way and then the other, causing sprains and strains of the tendons in the neck and possibly misalignment of vertebrae or of the skull on the neck. Neck pain can also be caused by degenerative disorders or poor posture. Headaches can also be a symptom of a problem in the neck. A lot of people take pain...