David M. Rapoport

If you snore loudly and you wake up feeling tired even after a full night's sleep, you may have sleep apnea, is a potentially serious disorder in which breathing repeatedly stops and starts. On this week’s Please Explain two sleep specialists talk about what sleep apnea is and what problems and complications it may cause. We’re joined by Dr. David M. Rapoport, Professor and Medical Director of NYU Sleep Disorders Center; and Dr. Susan Redline is Professor of Sleep Medicine at Harvard Medical School, Senior Physician, Division of Sleep Medicine, Brigham and Women's Hospital, and Physician, Division of Pulmonary Medicine, Beth Israel Deaconess Medical Center.

As summer nears its close, many of us are flying away to get our last taste of summer vacation, but nothing ruins a good jaunt to Europe like a bout of jet lag. In fact, jet lag was once considered such a problem that Congress set up a special unit at NASA devoted to studying the condition. Joining us to explain why jet lag occurs and how we can prevent it are Dr. Kevin Gregory, a former scientist at the NASA Jet Lag Center and the current senior scientist at Alertness Solutions Inc., and Dr. David M. Rapoport, Director of the Sleep Medicine Program at NYU Medical School.