[chubot]

Same here, I got a bout of severe RSI almost 15 years ago, for a few months

I changed many habits and it's been gone since then ... It's obviously different for everyone but I found that using a trackball helped a lot. For awhile I had a mouse on the left and trackball on the right, switching back and forth. But I don't need that anymore.

Taking breaks and minding posture is important. Wrist posture in particular -- I don't rest my wrists or arms on anything -- only my fingers make contact with the keyboard.

Much later, I started weight training with kettle bells, and I noticed a pretty nice improvement in strength / circulation.