The passion that Dr. Jason R. Karp found as a kid for the science of athletic performance (one of his earliest questions was how baseball pitchers throw curveballs) placed him on a yellow brick road that he still follows all these years later as a coach, exercise physiologist, author, speaker, and creator of the REVO₂LUTION RUNNING™ certification program for coaches and fitness professionals around the world. A prolific writer, Jason is the author of multiple books, including 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. He also served as senior editor for Active Network and has been an instructor for USA Track & Field’s level 3 coaching certification and for coaching camps at the U.S. Olympic Training Center. Dr. Karp is a USA Track & Field nationally certified coach, 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. For his work and contributions to his industry, Jason was awarded the 2011 IDEA Personal Trainer of the Year (the fitness industry’s highest award) and was honored with the President’s Council on Fitness, Sports, & Nutrition Community Leadership Award in 2014. 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.