I can't debate you about the fat thing. Every time I come back to the U.S. I am so disgusted. I remember being on a flight back to the U.S. from Paris, 12 hours to Houston. The only people I saw in Paris that were fat were Americans. After landing, the seatbelt light goes off and a woman about 3 rows ahead of me reaches up to the overhead compartment and all I see is arm fat hanging and jiggling. I was disgusted and knew I was back in America.
The American car culture has made us extremely lazy when it comes to walking. I regularly walk to the store that is about 1/3 mile away. People think I'm crazy for doing so, and its not even that far away.
Yeah, i can't generalise every american and i'm not the fittest bloke in the world but i was amazed at the reaction to the notion that i was walking a little distance to the next terminal instead of waiting for a bus.