Is there a name for necessary stuff that happens because of inefficiencies? Like, for example, exercise. If you're a dockworker in the 1700s you might have a bunch of health problems but "sedentary lifestyle" is not one of them. But if you become a dock crane operator in modern times, you need to both do your job *and* go to the gym where you "waste" a bunch of effort in order to exercise, because your job is sitting down now