Health and fitness expert Mark Sisson is the bestselling author of The Primal Blueprint and one of the leading voices of the burgeoning Evolutionary Health Movement. His blog, MarksDailyApple.com, has paved the way for Primal enthusiasts to challenge conventional wisdom's diet and exercise principles and take personal responsibility for their health and well-being. With over 2 million unique monthly visitors, the blog is one of the top-ranked health resource websites on the Internet.

Besides The Primal Blueprint, Mark has authored The Primal Blueprint 21-day Total Body Transformation, The Primal Connection (which won the Eric Hoffer Award in 2013 for best self-published book, and the Ben Franklin Award silver medal in the mind/body/spirit category); and numerous other books on cooking, athletic training, and health. Mark became a New York Times bestselling author with his 2017 title, The Keto Reset Diet, which also held the #1 overall bestselling book on amazon.com for a few days upon release.