Position Keyboard & Mouse
When working with a mouse or keyboard, your hands should be at elbow height or slightly lower. Keep your elbows at a more open angle rather than flexed, and your forearms, wrists and hands in a straight line. The keyboard should be at a comfortable distance, not so far away that you have to reach to touch the keys. When typing, relax your shoulders with your elbows close to your sides. When using your mouse, make sure your wrist is straight, not bent to either side; gently cup the mouse with your hand; don’t flex your thumb.