Gregory HammerGreg Hammer, MD, is a physician, best-selling author, and mindfulness expert. He was a Stanford University School of Medicine Professor for more than 25 years, a member of the Stanford WellMD initiative, and Chief of the Wellness Task Force fo the California Society of Anesthesiologists. Dr. Hammer has given workshops on physical, mental, and spiritual well-being across the U.S. and in dozens of other countries. Read More Read Less