►►► Free Newsletter: the21convention.com ►►► DVD Store: store.the21convention.com ►►► Subscribe on Youtube youtube.com Doug McGuff, MD became interested in exercise at the age of 15...
fitness.mercola.com Natural health physician and Mercola.com founder Dr. Joseph Mercola interviews Doug McGuff, MD to help us understand this highly beneficial form of exercise "High...
Body by Science co-author, exercise authority, and ER physician Doug McGuff, MD, goes through a workout at Greyhound Fitness in Orlando, FL on July 24,...