The science, which studies the safety and comfort of machines and furniture for humans. Ergonomics plays an important part in the computer world, where sitting in a chair and performing repetitive movements can cause physical distress to the body. Preparing your workspace to meet ergonomic standards can improve your computing experience. Ergonomically designed furniture helps to avoid Repetitive Strain Injury, back and neck strain, and other computer-related physical problems. Simple adjustments in the way you work on the computer can also help. For instance, position your work surface at approximately elbow height when you are seated. In most cases, this means your mouse and keyboard are located below standard desk height. Also, adjust your chair so that your feet rest comfortably on the ground or use an adjustable footrest.