Today I was watching a video on using Vim as a Python IDE when a comment about the health benefits of Vim caught my attention. Oddly enough, one of the reasons I decided to learn Vim was because of hand pain. After switching to Vim full-time, I have experienced less pain and could not imagine going back.
One additional step I took was to remap the left Ctrl key to Caps Lock. This has made a huge impact since I use the Ctrl key frequently and find the position of the key to be awkward. Hitting the normal key requires either a left hand movement or curling up the pinky finger; it is a recipe for hand cramps! The Caps Lock key being on the home row feels more natural. I use SharpKeys to handle the remapping on my Windows machines.