We have a budding activist for a son (he's 12). We all stand at our desks at our house, but our son, of course, has to sit all day long at school. We're encouraging him to start campaigning for standing desks at his public school, for all children. Yeah, yeah, I know; it'd be a change, and change is difficult, but it seems that the benefits to our society would far outweigh the fixed costs and the socio-educational-cultural adjustments that would have to be made. My own lay estimate is that we'd eliminate most of the childhood type-2 diabetes and improve the classroom educational environment.