Sit up straight with shoulders and head back, feet flat on the floor or a footrest, and forearms parallel to the floor. Ergonomic chairs that are adjustable in multiple ways help prevent back problems. What works best for me in preventing back pain is taking breaks and stretching, as well as keeping stomach and back muscles strong through exercise. Eyes are another common sore point when computing. There has never been any conclusive evidence that radiation from computer monitors leads to health problems, but staring at a computer screen can cause eyestrain.
Close work can worsen nearsightedness.
Experts say your most eye-friendly moves are to stay a foot and a half away from the monitor, minimize screen glare by positioning external lighting to the side, and periodically taking a rest. Don't Be on the Injured List Computers are great, when they're not a pain in the neck, the back, the wrists, or the eyes. Reid Goldsborough is a syndicated columnist and author of the book Stright Talk About the Information Superhighway.