The Primal Endurance podcast Interval shows are published in between our full-length feature episodes published on Fridays. For the Interval episodes, podcast host Brad Kearns discusses various elements of the Primal Endurance approach, pulling from topics in the book/digital course and adding some candid and fresh insights. The Interval shows will keep you focused and purposeful with all of your workouts and lifestyle decisions.

Understanding how both aerobic and anaerobic workouts, and fasting and ketogenic eating, promote the development of new and more efficient mitochondria. Mitochondria are stimulated by stresses to the cell, such as burning energy during a workout or restricting calories instead of constantly overfeeding your cells (as is the case with a high carb Standard American Diet). Mitochondria are the energy producing power plants in your cells that burn energy cleanly and protect you from the oxidative damage that occurs from high stress modern life. Poorly functioning mitochondria pave the way for accelerated aging and increased disease risk. Primal Endurance style training, with both aerobic and anaerobic workouts (in proper balance), and fat-adapted eating patterns, help you build an efficient, clean burning energy power plant in your body.