I'm a teacher at a bilingual school in Taiwan. While students here are sedentary due to the sky high expectations of academic success, how they eat here is very diifferent.

For those who eat breakfast at school it's often: congee (savory rice porridge), some type of soup (noodles and meat or dumplings), a bun with meat or red bean paste inside, and once a week they will have cereal (usually frosted flakes). Lunches are often the same: rice, some type of meat, vegetable, sometimes egg/tofu, a piece of fruit and a bowl of brothy soup when they're finished. Snacks are often soups (noodles and pieces of meat and veg or dumplings), boiled eggs and a slice of bread, jelly (similar to jello), and on Friday's it's usually a sweet snack like a sweet bun or a sponge cake (and they're definitely not as sweet as what the equivalent would be in the US).

Living here, I've definitely got into the habit of eating like them: where breakfast, lunch, dinner and snack can look the same.

Perhaps snacks in America should really just be smaller portions of what one would eat for a normal meal instead of packaged goods full of high fructose corn syrup, processed oils, and other chemicals designed to make us addicted to them. That should keep people fuller longer and they'll be less likely to overeat.