Ergonomics.

Picture From Environmental Health & Safety at Ohio University

Ergonomics,the study of how the body uses a work space and its equipment, are bad habits that seem small but can effect you greatly. Some bad habits are slouching, your wrist in the wrong direction, your eyes not level with the screen,ect. You might have this if you have neck pains, headaches, migranes, pain in your wrists,elbows and forearms. You may also have this if you are irritable, having numbness and tingling, have sore eyes or blurred vision. At any time you have these symptoms,take a break. While at your computer,your back needs to be in your chair,your back touching the back of the seat but not slouching, and your eyes be level at the top of your computer monitor, your head being 18-24inches away. Your arms need to be at a ninety degree angle with your home row in front and fingers on the keys.