I used to have very bad headaches when working and found out that it was due to a bad position of my neck. I've since changed my office chair, made sure that the screen is positioned so that I don't look down and the headaches have disappeared...
> made sure that the screen is positioned so that I don't look down
Guys working on laptops should pay attention to this.
Looking down (tilting the head forward, even slightly) means the muscles in the back of the neck now have to hold up the weight of your head (3 kilos?), instead of merely balancing it, as when the head is upright. This can cause serious neck tension.
