[nostrademons]

I've found the absolute best thing you can do is to switch positions frequently. I've got terrible posture - I'm frequently curled up & twisted in my chair - and yet have never had RSI or back problems, probably because I don't hold that posture for long. At work, I usually migrate between my desk, the futon, a beanbag, and the massage chair. At home, I switch between couch, floor, bed, and balcony, with frequent breaks to get up and pace.

When I don't get up and switch, I frequently do have problems, like I threw out my shoulder leaning on the couch while reading the NaNoWriMo forums last night. Vegging out can be hazardous to your health...