MARK SISSON presides over a wide-ranging Primal enterprise featuring the wildly popular Primal Kitchen line of healthy condiments, The Primal Health Coach Institute, a line of premium performance and nutritional supplements, and numerous books and online educational courses. A former world-class athlete in the marathon and ironman triathlon, he is considered a founding father of the Primal/paleo/keto health movement. He publishes daily tips and inspiration at MarksDailyApple.com, the top-ranked blog in its category for over a decade.

LINDSAY TAYLOR, Ph.D., writes and researches for Sisson's Primal Blueprint enterprise, hosting podcasts and serving as the lead moderator on the thriving Keto Reset and Primal Endurance communities on Facebook. Find her healthy, colorful meal creations on Instagram @theusefuldish.