I'm curious if there's good data on what constitutes a "sedentary lifestyle" over time. In the early 1900s, I suspect people with desk jobs had a lot of small activity over the course of the day that we can now avoid. I take an elevator, drive for errands, and look up just about anything without leaving my desk. I don't even have to cross the room to turn on the modern equivalent of the radio. I don't have to get anything from a filing cabinet except for perhaps a few times a year. Is that the same as "sedentary" of old?