The society is built to sit in a chair 8h, get in your car and drive 1h home and sit in a chair. Then repeat.
Also "eating 3 meals a day"
I eat 3 full meals, I blow up like a balloon. I don't get it. It's like they have to constantly eat. When I was a teen or in my 20s yes. Now in my 30s its game over.
It is also the way society, public transport, cities are designed.
I walk 4km to work when its nice out here in Europe. Could I do that in the USA?
Eating three meals a day is a very very very recent thing if you account for human history, or even modern human history
Yea I can down a familiy pizza if its all I eat for the day.
Also, the rise of zero/light drinks have actually helped.
I had a business trip to Germany (from the US) and found it enlightening. We all went out to eat after work one night and a couple of the local Germans had to walk 20 minutes from the restaurant to the train station to go home and didn't think anything of it. It wasn't a big deal to walk, but you'd never do that here in the US - or at least in Michigan where we have no real public transportation.
People usually lie or have no idea how many calories they consume.
My small Swedish town of 50k has buses going everywhere every 10min. An American town of 50k is a village where there is maybe 1 bus line.
I mean, why on earth would they think anything of it?