http://halftimemag.com/articles/09-2007/09-2007-fitness-to-the-max/index.html Athleticism and health: In this issue, find out why teenagers need more sleep than their younger siblings. Thu, 20 Nov 2008 09:15:41 -0800 http://halftimemag.com/articles/09-2007/09-2007-fitness-to-the-max/sleep-rules.html http://halftimemag.com/articles/09-2007/09-2007-fitness-to-the-max/sleep-rules.html Mon, 24 Sep 2007 01:00:00 -0700 <p>Want to know why you need one or two more hours of sleep than your younger siblings?</p> Fitness to the Max