Hi dkozel, your post prompted me to look into the Microsoft Ergonomic keyboard and Anker vertical mouse as I do often feel a tiredness in the lower arms and shoulders, which I haven’t paid attention to so far, but will now.
Repetitive Strain Injury, which is an umbrella term for a ton of different conditions but they generally involve pain from doing a certain activity too much or unergonomically
What does RSI mean?