Joe Friel has a Master’s degree in exercise science and has trained endurance athletes from novice to national champion to Olympian. As an age-group competitor, Joe has been a Colorado State Masters Triathlon champion and a perennial USA Triathlon All-American duathlete. He is the author of several training books, offers clinics for athletes and coaches, and consults with national sport federations. He is the cofounder of TrainingPeaks.com and TrainingBible Coaching. @jfriel / joefrieltraining.com