Have you heard? Sitting is the new smoking. We're sitting longer than we ever have before: adults average nine hours of sitting a day, while children spend almost as much time sitting in front of a screen and in school. Driven by a combination of a car-centric culture and an insatiable thirst for productivity and efficiency, we have been designing walking out of our lives for nearly a hundred years--and there's an ever-growing concern and nationa...
