Headache is almost never located in the brain.
There is actually not much ability at all to sense pain in the mass of the brain - surgeons do for instance not use anesthetics on the brain when they perform brain surgery.
Headache is almost always located in the muscles of the head - caused by tension built up during long time in these muscles.
Here some tips :
- Open your mouth wide and rotate the jaws from time to time.
- never let your rows of teeth meet each other any other times than when you are chewing something.
- make rotating movements with the shoulders.
- Tip your head slowly to the sides and stretch out the muscles of the neck.
- Drink enough water ...