Ronald L. Kotler, MD, DABSM (Philadelphia, PA), is the respiratory director at the Pennsylvania Hospital Sleep Disorders Center and is a member of the American Board of Sleep Medicine, the American Sleep Disorders Association, the American College of Physicians, and the American Thoracic Society.
Maryann Karinch (Estes Park, CO) is the author of twelve books. She has competed successfully in multiple sports, including gymnastics, bodybuilding, and endurance racing, and holds a current certification in personal training from the American Council on Exercise.
Charles R. Cantor, MD, DABSM (Philadelphia, PA), is a neurologist specializing in sleep disorders. He is the medical director at the Penn Sleep Centers.