Wysiwyg-- you're right! People here definitely get out more, walk more, and are generally more active. So I'm sure that makes a difference. It's a little disturbing, actually-- everyone is so THIN! But they also eat a LOT of olive oil (and pork fat)... a very high fat diet. I don't. I almost never fry-- but when I do, I use olive oil. It's super cheap here, after all.
I really think there has to be something about olive oil that helps keep you thin. Not a scientific theory, of course... just a study in observation. Sure, people here are more active. But not THAT much more active. I think they probably eat as much or more fat here than in the States, yet everybody is (comparatively) thin. It's gotta be the diet. I certainly lost weight when I moved here!
Anyway, just my theory. Olive oil is wonderful!
-Karen