How to: If you have a chair with wheels and are on a surface that allows your chair to easily scoot, try this one, carefully. Sit in the middle of your chair with your back away from the backrest. Lean slightly forward until your chest is 2 inches from your desk. Grab the desktop with both hands at about shoulder width. Your elbows should be bent along your sides. Push out until your arms are almost fully extended, leaving a slight bend in your elbows. Then, pull yourself back to the starting position.