They also don't have a retarded work culture that promotes drinking at work and staying super late (half of the companies I've been at literally give shoutouts to the workers doing this.)European food is regulated much more strongly than here. For example a lot of the high fructose syrups present in our food is straight up banned in the EU. Their portion sizes are also a lot smaller for pretty much everything across the board.
On the energy side of things, people in Europe are by and large more active. People walk, cycle, or take transit to get around. All these factors add up.
They also have far better vacation packages. I know all of this contributes to being fat.