There was an article in yesterday's Times about how sitting is bad for you. People who sat for seven hours at a time (how do you even DO that?) messed up their blood-sugar and insulin levels. People who got up every twenty minutes to walk for a couple minutes tested at better levels. I tend to hop up and move around the house a lot when I'm working on the computer, especially when I'm writing stories. I used to curse my short attention span, but I guess I can start celebrating my inability to write more than a paragraph at a time without getting up and walking around. (because, you know, those chicks have to be checked on every 15 minutes...)
This has saved a few meals, though: only when I lose my concentration and get up to wander into the kitchen do I remember I left a pot on the stove that is now boiling madly.
http://www.nytimes.com/2012/04/29/sunday-review/stand-up-for-fitness.html(Sitting and watching TV is even worse. Apparently after factoring out everything else researchers found that by not watching TV as adults people could extend their lives for up to a year and a half.)