I'm at about 20 years of using a computer with no pain or strain and from really early on I've always ensured my forearms are always parallel to the ground. Fr

I'm at about 20 years of using a computer with no pain or strain and from really early on I've always ensured my forearms are always parallel to the ground. From there you can stand or sit. When sitting I used to use chairs that had arm rests so there was no pressure or strain. When standing I sort of do the same thing, except there's less forearm support. The most recent picture of my desk set up is at: https://nickjanetakis.com/blog/build-your-own-8x4-foot-whiteboard-for-15-dollars-instead-of-200 https://nickjanetakis.com/blog/build-your-own-8x4-foot-white... When I stand straight my eyes are roughly 1/3rd of the way down from the top of the monitor. This set up seems to be working well after a couple of years. I also think what helps is that I'm not a home row typist. This is probably an unpopular opinion and maybe totally wrong but I personally find it way more comfortable if I'm moving my hands around regularly instead of just locking everything in place for extended periods of time where I only move my fingers.