> Like, that thing above is promoted all the time - while Americans are getting heavier and heavier. And while most people who loose weight gain it back again and some more.
I suspect that this is largely because for the average person, the majority of their physical activity is a response to the physical organization of their environment rather than a specific lifestyle choice. We've spent the past ~70 years filling America with places where not only does one need to deliberately seek out excuses to physically move, economic and infrastructure factors might also demand that one spend upwards of an hour per day sitting in a motor vehicle.
