DEAR ABBY: My parents go to bed at 9 or 9:30, so they make my brother and me go to bed at the same time. I'm 13, and my brother is 17. I have no problem waking up in the morning, and I make good grades. So why do they insist on an early bedtime for us? Most of the kids in my grade have a bedtime of 10 to midnight. What are your feelings on this? -- FRUSTRATED TEEN IN FLORIDA
DEAR FRUSTRATED TEEN: While most individuals have different biorhythms, I have read over the past few years that many people in this country are not getting enough sleep. This has a negative impact on their ability to concentrate, learn, drive and work efficiently. It can also affect the immune system. Regardless of what "most" of the kids in your grade are doing, your parents are doing what they feel is right for you and your brother.