Mark Sisson is a former elite runner, triathlete, the founder of Mark's Daily Apple, a well known health & fitness blog, and the author of the Primal Blueprint (among other things).

During our conversation we covered a lot - from pre-event nutrition and how it's changed over the past 30 years, to sleep, not overeating, carbs vs. fats, cholesterol, barefoot running and a host of other topics.

I interviewed Mark as part of the Whole Life Challenge interview series. This series represents our continued commitment to addressing health and fitness in the context of a person’s Whole Life. We’ve specifically chosen subject-matter experts who have mastered areas of their lives that are related to the health and wellness habits we introduce in the Whole Life Challenge.