I've been wondering the same about ‘normal’ levels of activity. Pretty sure most of us are horribly motion-deprived by the standards of hunters or gatherers. Bu

I've been wondering the same about ‘normal’ levels of activity. Pretty sure most of us are horribly motion-deprived by the standards of hunters or gatherers. But then again, presumably someone also was staying behind at home, and I don't remember any folk wisdom saying housekeepers are all dystrophic.