I had the luck to learn type writing and fast writing (sorry, I am not sure the English terminology for these) and my teacher spent months to teach us how to properly warm up hand, wrist, arms, necks.
So myself, I do have a small daily training what helps.
Near it:
Also, ergonomic keyboard or at least a big enough mechanical (my dream is a mechanical gaming keyboard what is actually ergonomic).
Sometime, some person like to use wrist stand pads also.
Ergonomic, healthy/good chair with full arm rest.
Workout/Training in general.
Keeping some break between longer type sessions (if you know blind typewriting, then this could mean literally pretty nice character numbers...)
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I had the luck to learn type writing and fast writing (sorry, I am not sure the English terminology for these) and my teacher spent months to teach us how to properly warm up hand, wrist, arms, necks.
So myself, I do have a small daily training what helps.
Near it: