Most of our problems from typing are caused by our technique rather than by the keys on the keyboard.
Most of us self-trained typists type with our fingers. If you have ever watched a properly trained typist you will notice they type with their forearms. The muscles and tendons in our hand are small and weak, the muscles and tendons in the arm are large and strong. The only finger movement a properly trained expert typist makes is to extend the finger a bit so that finger hits that key, all the other movement come from the elbow and shoulder and none of them come from the wrist.
Try it. Just let your fingers drupe in a curve and tap you fingers gently on a tabletop by moving you forearms. You can do that all day lone with no pain, then do it by just moving your fingers. In a few minutes your wrists will be hurting. Of course I am telling you to do as I say not as I do, it takes a lot of effort to over come 60 years of doing it wrong. But, I keep trying to remember to do it right.
