This program is designed for ALL levels, because it includes specific testing sessions to identify your customized intensities for each workout. Are you a busy person who still wants to compete in Iron Distance Traithlon? Then this Quality Over Quantity plan is for you, with just 8-12 hours of training per week, and detailed daily workouts written by Ben Greenfield. Each session is based on the concept that high intensity interval training results in superior endurance adaptations, compared to high volume training.