Brad Kearns tackles more interesting Q&A from Primal Endurance podcast listeners and book readers. Submit your questions at primalblueprint.com/endurance and they will get covered on the air. Topics include: can the Primal Endurance approach apply to high school distance runners? Must young athletes adhere to the "180-age" aerobic principles? How to reconcile the "total fitness" goal of The Primal Blueprint laws with the specifics of Primal Endurance (aerobic emphasis and periodization); how possibly backing off from a very ambitious weekly workout pattern (featuring plenty of endurance work along with numerous high intensity sessions) can actually help facilitate fat loss by lowering cortisol levels; and much more.