One of the most common thing for Americans to notice when they visit
Disneyland Paris is smoking. Often mentioned as the #1 downside of the park.
And I wouldn't be surprised if that correlates with the French being skinnier
Although, when i used to work for a French Dutch company, we had a French colleague coming over to NL to give us a training. We graze, in NL it is common to have snacks on your desks or at the office and eat all day. So we did during training. The French colleague was almost appalled and had to mention it to us in class. Later I noticed, my French colleagues seemed to stick to 3 bigger meals during the day, without snacking.