DO: Put your laptop on a flat surface with the screen at a 90-degree angle, then tilt it back 20 degrees. Elevate the monitor on a desktop computer to eye level. Move the keyboard toward you so your elbows are close to your sides and your forearms and biceps form a 90-degree angle. Sit straight and scoot up, leaving 2 to 4 inches between the back of your knees and the chair. Plant your feet evenly on the floor.
THE PAYOFF: Less strain on your upper back and neck. You alos minimize the compression of your lower back.