“No one does a deep dive into human health and performance like Ben Greenfield. He leaves no stone unturned as he explores all the recent (and ancient) science surrounding optimal health. No matter where you are on your longevity journey, there are many concepts in this book that, if implemented, will likely change your life for the better.”

Mark Sisson

Author of the Primal Blueprint and MarksDailyApple.com, founder of Primal Kitchen Foods and Primal Kitchen Restaurants.

“Ben Greenfield is a leader in not only personal fitness but in finding leading edge approaches to optimizing fitness, health and biology. He is networked to some of the major health thought leaders of our time and is able to gather information from them into digestible bites in his regular podcasts. I listen to many health podcasts but Ben’s are by far my favorite and his exposure to many novel topics has helped expand my health knowledge in a number of important areas.”

Dr. Joseph Mercola

Founder of Mercola.com, educator and award winning author of three New York Times Bestsellers, The Great Bird Flu Hoax, The No-Grain Diet, and Effortless Healing.

“Boundless means living without limits and Ben will show you how. If you are looking for limitless energy, health and how to live your best life, follow Ben’s advice.”

J.J. Virgin

CNS, CHFS, Nutrition, Fitness & Mindset Expert, NYT Bestselling Author of The Virgin Diet & Sugar Impact Diet


Read What Others Are Saying...

Ben's Latest Books

  • Endure

    $19.00

  • Boundless Cookbook

    $49.00

  • Spiritual Disciplines Journal

    $31.00

  • About the Author

    Ben Greenfield is a human performance consultant, speaker, and New York Times bestselling author of 17 books, including the widely popular titles Beyond Training, Boundless, Fit Soul, Spiritual Disciplines Journal and the Boundless Cookbook. A former collegiate tennis, water polo and volleyball player, bodybuilder, 13-time Ironman triathlete and professional obstacle course racer, Ben has been voted by the NSCA as America’s top Personal Trainer and by Greatist as one of the top 100 Most Influential People In Health And Fitness.

    A frequent contributor to health and wellness publications and websites and a highly sought-after speaker, Ben’s understanding of functional exercise, nutrition, and the delicate balance between performance and health has helped thousands of people around the world achieve their goals and improve their quality of life–from high-level CEOs to soccer moms to professional athletes and beyond. Ben also seeks to teach and inspire people to fully experience and joyfully savor all of God’s creation while optimizing their physical health

    Ben is an advisor, investor, and board member of multiple corporations in the health and fitness industry, and is also the founder of KION, a nutritional supplements company that combines time-honored superfoods with modern science to allow human beings to achieve peak performance, defy aging, and live an adventurous, fulfilling, joyful and limitless life.

    Ben hosts the highly popular fitness, nutrition, and wellness website BenGreenfieldLife.com, a site with over a million monthly visitors, featuring articles, podcasts, and product reviews from Ben.