Taking a bigger picture view, this makes me wonder.. we took so much effort to move from the industrial age, where hands on work, always active all day work took its toll on workers, to the service or knowledge age, where we sit all day and that takes its toll.<p>Surely the answer lies somewhere in-between, that we must rest, and we must move, and the amount of each must be relative to each person and activity.<p>I would prefer to see studies not just trying to prove things bad (we have enough of those), but focuses on what can be proven to be a positive, for example, the optimal mixture of activity and rest for different people and situations.<p>For example, in addition to "sitting may be bad for your heart" (while necessary and important), I would like to see more of the studies that say "for age group <Y>, occupation <Z>, walking for <N> interval followed by resting for <M> interval increased <X> or <Y> positive benefits".<p>Since we automated a lot of manual labor, maybe the next big thing is automating sitting all day so we can get up and walk around.