In her private practice, Isabel works as a concierge nutritionist for individuals and corporations, drawing from her extensive clinical background in many areas of holistic wellness and nutrition.

He has been profiled in a number of publications and is the 2011 IDEA Personal Trainer of the Year (the fitness industry’s highest award) and 2014 recipient of the President’s Council on Fitness, Sports, & Nutrition Community Leadership Award.

Dr. Karp has given hundreds of international lectures and has been a featured speaker at most of the world’s top fitness conferences and coaching clinics, including Asia Fitness Convention, Indonesia Fitness & Health Expo, FILEX Fitness Convention (Australia), U.S. Track & Field and Cross Country Coaches Association Convention, American College of Sports Medicine Conference, IDEA World Fitness Convention, SCW Fitness MANIA, National Strength & Conditioning Association Conference, ECA World Fitness Convention, and CanFitPro, among others. He has been an instructor for USA Track & Field’s level-3 coaching certification and for coaching camps at the U.S. Olympic Training Center.

A prolific writer, Jason is the author of eight books: The Inner Runner, Run Your Fat Off, 14-Minute Metabolic Workouts, Running a Marathon For Dummies, Running for Women, 101 Winning Racing Strategies for Runners, 101 Developmental Concepts & Workouts for Cross Country Runners, and How to Survive Your PhD, and is editor of the sixth edition of Track & Field Omnibook. He has more than 400 articles published in numerous international coaching, running, and fitness trade and consumer magazines, including Track Coach, Techniques for Track & Field and Cross Country, New Studies in Athletics, Runner’s World, Running Times, Women’s Running, Marathon & Beyond, IDEA Fitness Journal, Oxygen, PTontheNet.com, Shape, and Ultra-Fit, among others. He also was the senior editor for Active Network.

At age 24, Dr. Karp became one of the youngest college head coaches in the country, leading the Georgian Court University women’s cross country team to the regional championship and winning honors as NAIA Northeast Region Coach of the Year. He has also coached high school track and field and cross country. His personal training experience ranges from elite athletes to cardiac rehab patients. As a private coach, he has helped many runners meet their potential, ranging from a first-time race participant to an Olympic Trials qualifier. A competitive runner since sixth grade, Dr. Karp is a nationally-certified running coach through USA Track & Field, has been sponsored by PowerBar and Brooks, and was a member of the silver-medal winning United States masters team at the 2013 World Maccabiah Games in Israel.

Dr. Karp received his PhD in exercise physiology with a physiology minor from Indiana University in 2007, his master’s degree in kinesiology from the University of Calgary in 1997, and his bachelor’s degree in exercise and sport science with an English minor from Penn State University in 1995. His research has been published in the scientific journals Medicine & Science in Sports & Exercise, International Journal of Sport Nutrition and Exercise Metabolism, and International Journal of Sports Physiology and Performance.

Doug has worked with Desmond Tutu as his co-writer and editor for over a decade, and before founding his own literary agency, he was a senior editor at Harper Collins and also served for nine years as the religion editor at the University of California Press.

He believes strongly in the power of books and media to catalyze the next stage of global evolutionary culture.

He lives in Santa Cruz, California.

Randy lives in Portland, OR, with his wife and two young daughters.