Thanks for replying! The ergonomics recommend not resting your forearms on the edge of the table, but as you say, everybody's anatomy is different; if it ain't broke, don't fix it.
In case anyone else comes into this comment section looking for ideas: the thing that helped me the most was adding soft pads to my chair armrests - I found that resting my elbows on the hard surface of the default armrests resulted in forearm pain.
In case anyone else comes into this comment section looking for ideas: the thing that helped me the most was adding soft pads to my chair armrests - I found that resting my elbows on the hard surface of the default armrests resulted in forearm pain.