Got any tips for avoiding or curing the YA numb backside syndrome ?

Hell with standing up, doing exercise, etc. Just get a comfy computer chair, pillows for your back and something to put your feet on that will make you very comfortable. Set up a place for your drink, ciggy (if you smoke) and a snack and type away. I even have a bed for my Sophie to lay in right beside me. No numbness anywhere. Only wish I could slam a portapotty right next to my computer and I'd be set! lol!