"Most Japanese citizens live in very walkable cities where public transportation is convenient, safe, and affordable, and not many households own cars."
I want to believe that quote is true.
I know very very little about Japan and the people who live there. Internet says about 70% of people there own a car.
Doesn't that mean people who live in Manhattan (or other walk-able cities in the US) should have similar fitness levels? I also know little about fitness levels of people who live anywhere, but does it follow that if it's the walkable city making the difference, then people in Paris, NYC, London... any walkable city would have the same fitness level?