extend life: A half century later, Kelder’s booklet was rereleased as Ancient Secret of the Fountain of Youth. It became an international sensation, selling more than two million copies. A review of some of the cardiopulmonary benefits of practicing the Five Tibetan Rites can be found in an article by Dr. Joel Kahn, “A Cardiologist’s Favorite Yoga Sequence for Boosting Heart Health,” MindBodyGreen, Sept. 10, 2019.
