I don't know if this really counts as a book, it's basically just a bunch of exercises and healthy food choices put together in a small book for teens. I'm also not a teen, but I think this would be very good for a teens, kind of wish it was out back when I was a teen. A lot of the exercises are things that you can find on pilates, yoga, and cardio workout DVDs. Some of them looked like fun. The food section was kind of common knowledge type of tips, stuff you'll find in any health magazine. But it is convenient to have all of that in a book. Anyone could get use out of it, but if you have a teen, you should give her a copy. Its never to early to start learning healthy eating and exercises.