I was thinking about this last night. I walk to work in the mornings, walk home for lunch, and also walk home at the end of the evening [it takes about ten mins to do the walk from home to work]. Seeing as I spend most of the day at a desk - and if I'm at home all evening - how many calories would I burn off in a day? I imagine you still burn them off while idle, but not that many... can anyone help?