Do you have a voice activated computer so you can walk and do hands-free typing? Is that possible? "Being hands-free and type all at the same time? It would be quite a talent if you could walk and type and keep your balance on a treadmill while typing 65 wpm. Of course, I can't type 65 wpm sitting, let alone walking on a treadmill. Chewing gum and walking or running, yes. But, typing, probably not. Ramblin' on. I'll stop. :P
If I knew a solution, I'd let you know :P I sometimes lose track of how long I've been sitting, but sometimes I do try and get around and walk for a while, even going outside.