People usually think that North American teenagers expend their time watching TV shows and eating hamburgers and hot dogs. But we shouldn’t generalized, I think this is a stereotype. I am living in California, and I see many teenagers on the beach, practicing surf, or on the street with their skateboards, or maybe at the shopping centers. And they are not fat.
On the Internet you can find hundreds and hundreds of pastimes. I have a recommendation. There is a game (an interesting game, not a silly game) named “Semagames” where you can play to the Empathy Game. The rules are that each day they give you a theme and you should write 10 words related to this issue. If you are agree with the mainstream, you win more points to the monthly classification. It’s funny and you have to think to play it.