Jeffry Life (born 1938) is a physician and author from the United States, known for maintaining a youthful body in old age. Life’s first book, The Life Plan, was released in 2011 and became a New York Times Best Seller. He followed it with Mastering The Life Plan in 2013, and his third book, The Life Plan Diet, in 2014. The books received wide criticism for promoting diet and exercise as the primary means for which Life accomplished his physique, while failing to mention the extensive use of Cryogenic and Human Growth Hormone (HGH) supplements.