The R-Go HE Basic mouse has an ergonomic vertical shape, which ensures that your arm and hand have a natural, relaxed posture. This natural “thumb up” posture stimulates larger mouse movements, which are healthier than small movements from the wrist. This way you relieve small muscles and tendons in the wrist and hand and can prevent annoying pain symptoms such as RSI. Make sure you do not set the cursor speed of the mouse too sensitive, otherwise you will probably still make small cramped movements. This mouse is purposely designed to be lightweight, so you need less muscle tension to move it.