Sitting at a desk or leaning over a project can contribute to a slouched posture. For most of us, the chairs we are used to don't really encourage good posture. If you find yourself hunched over a keyboard or bent at an odd angle trying to figure out a problem, you may want to invest in an ergonomically-sound chair or work bench. Ergonomic furniture promotes good posture and will help you keep your back straight and your head up while you're working.