Adolescent sleep problems: Why is your teen so tired? Adolescents are notorious for staying up late at night and being hard to rouse in the morning. Your teens are probably no exception. But it's not necessarily because they're lazy or contrary. This behavior pattern actually has a real physical cause. And there are ways to help mesh your adolescent's sleep schedule with that of the rest of the world. Read on ... Tags: sleep, teenagers,parenting, family