Is studying late at night worth the outcome? Posted on September 19, 2012 by rachel.stenta@gmail.com http://www.npr.org/blogs/health/2012/08/22/159435167/high-school-daze-the-perils-of-sacrificing-sleep-for-late-night-studying Dr. Mary Kay Keller Hassle Free Bedtime? click here http://astore.amazon.com/lifsjouagrass-20/detail/B005ELMC0Q