Mark Sisson and Brad Kearns talk about the wonderful world of Primal Endurance. More than a book and an online course (primalendurance.fit), this is a revolution in the traditional "struggle and suffer" approach to endurance training. If you are an endurance athlete or even just a cardio enthusiast at the gym, this is a great show to lay the foundation for a healthier, more sensible, more effective approach to endurance training. The duo discuss heart rate parameters, stress and rest balance, the strategic inclusion of high intensity workouts, and much more. If you are gonna spend the time and energy to conduct devoted endurance workouts, do it the right way. Realize that slowing down to go faster really works!