I came across a website today that estimates at my weight, if I did nothing else but stand rather than sit while I work on my computer, I'd burn an extra 456 calories a day (8 hour day). Has anyone tried this? Does it work? More importantly, before I spend the money re-arranging my office, what are some of the side-effects (back? feet?) My office sits on a second floor, so it's carpet on top of wood subfloor and wood beam. My weight loss has stall of late, and I'm trying to make all the changes I can keep doing consistently in my life before I start adding things like exercise (which I'm never consistent at).