Via Tyler Cowen, a post arguing that the French, particularly French kids, don't snack. I wonder, no vending machines? (Tried to do some research--this article says Japan has 10 times the number of vending machines as France, but it's twice the population. In 2008 France banned all vending machines from schools).
And this, from Chris Blattman is a video showing how the French stay slim. Of course it involves sex, what else?