Some kids can do it. Some go to sleep earlier and wake up refreshed. Some don't, it's biological that's all. I wish I'd gone to bed earlier in high school but I was wired to stay up late. Same in college. It wasn't until I started working that I got to bed earlier. And after having kids man I can go to bed at 8pm easy.
Sleep patterns change throughout life. (Think infants, toddlers, young adults, middle-aged, elderly). The sleep pattern of a given teenager is not necessarily the same as the one they'll have even a few years latter, no external rewiring required.
