carpal tunnel

[Dr. Toboggan]

this is aimed especially towards high level players - what's your experience with hand/finger pain? do you do anything while playing to prevent future carpal tunnel/arthritis/etc? hand stretching, warming up, only using certain keyboards, that sort of thing

i ask as i've maybe accumulated a measly 10-15b grandtotal over the years, but my left hand aches after playing pretty bad. seeing as people have done 5x that grandtotal, i wonder if it's technique that preserves them

thanks