Bob Greene (born December 8, 1958) is an American exercise physiologist and certified personal trainer specializing in fitness, metabolism, and weight loss. Greene is the creator of Best Life, a diet and fitness plan, and Best Life Foods, which sells a line of butter substitutes.
Greene was born in Cherry Hill, New Jersey and is a graduate of Cherry Hill High School East.
Greene studied physical education at the University of Delaware and then went on to get a master's degree in exercise physiology from the University of Arizona. He is a member of the American College of Sports Medicine.
Greene has authored over ten books concerning weight-loss, diet and health, including two books co-authored by Oprah Winfrey. He is a frequent guest on The Oprah Winfrey Show, has a radio show on the "Oprah and Friends" satellite radio network and is a contributor to O. He lives in Santa Barbara, California with his wife, Urania, and their daughter. Winfrey was the "Best Woman" at his 2005 wedding.