Many of us suffer from headaches from time to time and there are several causes. Headaches can be due to previous neck injuries, work-related strain, computer or mobile phone use, poor eyesight leading to straining, stress and many other factors. Most headaches are not serious and once the cause is established, headaches can often be helped by simple changes in lifestyle. One cause can be tension or strain in the muscles and joints of the neck and upper back. Where there is i