humm, you are putting your health at risk on lots of things with your computer. Repetitative Stress Syndrom from your mouse/joystick. Carpel Tunnel Syndrom from your keyboard. Eye Strain Syndrom from your monitor. Etc etc. There is quite a bit out there. Look for things like ergonomics when you search google. I know that a lot of HR (human resources) sites are putting up a lot of information dealing with computer related work injury, because OSHA is starting to hold companies responsible for things like Carpel Tunnel.