Yeah, just saw that on the Dish and thought of posting!
Probably came from the recent NYT article that talked about this too. (Edit, the version I saw was smaller, now I see the NYT cited in the middle of other cites at the bottom of the graphic.)
I know I sit too much. Have been trying to get up and move around more since reading the article.
Eventually we're all going to have computers mounted on treadmills and we generate some of the electricity needed to run them...