It's very different. First, in Paris and in most major European cities, most people aren't driving to work. The infrastructure isn't there to accommodate that. The freeways aren't big enough, and there isn't enough parking. And of course, gas costs a fortune because of the taxes. Accordingly, they take public transportation, which almost always means significant walking.
Second, lunch breaks in Europe are usually longer. That means that people over here aren't driving to a greasy fast food place, wolfing down lunch in their cars, and then rushing back to the office. They have time to get real food. (That also means that Europeans have much cleaner cars.) And when they get fast food, it is usually much lighter than the Big Mac, fries, and big soda. It's a sandwich or bratwurst in a fresh roll.
Third, dinner isn't as big of a meal here. For example, Germans usually have abendbrot (evening bread). It's usually sliced bread, some sliced meat and cheese, and maybe some soup or salad. It's much lighter than an American dinner. They do make an exception at restaurants, but that is the exception, not the rule.
Fourth, Europeans keep a garden. In the US, most Americans hand a crew of Mexican dudes some cash and let them work on their yards while the American sits in his air conditioned house. Europeans don't do that. They'll put almost daily work into their garden and yard. They will pay someone to set it up, but they maintain it. I used to live next door to a very wealthy German guy who was probably in his mid 70s. He had a big fancy house and cars, but almost every day, he and his wife would go out to the garden and work. She'd be bending over and planting flowers, and he'd be climbing under bushes pulling weeds. They could easily afford to pay someone to do this, but that just isn't what Europeans do. It's a matter of personal pride, so they do it themselves. Well, that burns calories.
