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Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging Hardcover – January 21, 2020

4.8 out of 5 stars 1,427 ratings

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Editorial Reviews


Wall Street Journal bestseller
Publisher's Weekly bestseller
One of CNET's best new health and wellness books to read in 2020

"The book you are holding contains the most up to date, cutting edge information on health and fitness. Ben has devoted his life to researching and testing every modality of human performance excellence.  His curiosity is boundless and we are the beneficiaries of his tireless dedication to the newest data on sleep, diet, exercise, supplementation and biohacking." 
-Rick Rubin

"In today's fitness space, self-experimentation is the name of the game. In this crowd, few are pushing things further than Ben Greenfield."

"Ben has always been at the bleeding edge of health and fitness but in Boundless he takes the newest and best information and synthesizes it to address all aspects of performance, health and longevity."
-Robb Wolf, New York Times bestselling author

"Boundless means living without limits and this book will show you how. If you are looking for limitless energy, health and how to live your best life, this book is for you."

-J.J Virgin, New York Times bestselling author

"Ben Greenfield masterfully combines science, practical experience, recipes for life, and entertaining stories of his extreme experiments to produce an epic book that is inspiring, informative, and life-changing."
-Mark Divine, Founder, President & CEO at Unbeatable Mind & SEALFIT

"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, New York Times bestselling author and founder of the Primal Blueprint and Primal Kitchen

"As someone who has always had a hard time sleeping, I'm grateful for Ben's willingness to be his own case study. I learned so much and will be incorporating some of his suggestions in my sleep life. No one has the time to drill down and get as granular on important self care techniques, but Ben and his new book Boundless provide very detailed solutions that are thankfully spelled out and comprehensive." 

-Gabby Reece, American professional volleyball player, sports announcer, fashion model and actress

"Pacific College's Master of Health and Human Performance degree was inspired by the state-of-the-art health information presented in Ben Greenfield's podcasts. Our faculty were so pleased to learn that many of these ideas and insights were being published in his book, Boundless. The book and its accompanying Book Resources website are tremendous resources, particularly for our program's Nutrition and Physiology of Human Performance courses. Selecting Boundless as a text was an easy decision. Its contents challenge many conventions while expanding our boundaries. It is therefore a perfect vehicle to develop the critical thinking and evidence-informed practice of our graduate students."

-Jack Miller, President at Pacific College of Health and Science

About the Author

Ben Greenfield is a former bodybuilder, Ironman triathlete, pro obstacle course racer, human performance consultant, speaker and author of 13 books, including the New York Times Bestseller “Beyond Training”. 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. He works with individuals from all over the globe for both body and brain performance, and specializes in anti-aging, biohacking, and achieving an ideal combination of performance, health and longevity.

A frequent contributor to health and wellness publications 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 CEO’s to executives to exercise enthusiasts, professional athletes and beyond.

He is the founder and owner of KION, a nutrition supplements company that combines time-honored superfoods with modern science to allow human beings to achieve peak performance, look amazing, defy aging, and live an adventurous, fulfilling, joyful and limitless life.

Ben coaches and trains individuals all over the world for general health, anti-aging, weight loss, lean muscle gain, holistic wellness, and both body and brain performance, both at conferences and getaways and also via online training and consulting.

In college, Ben competed in tennis, water polo, and volleyball, then moved on to over a decade of competition in endurance sports, including as a top ranked triathlete, 13-time Ironman triathlete, multiple Ironman Hawaii finisher and member of the pro Spartan team. Ben resides in Spokane, Washington with his wife, Jessa, and twin boys, River and Terran, where he enjoys fiction, guitar, ukulele, spearfishing, bowhunting, plant foraging and cooking.

Product details

  • Publisher : Victory Belt Publishing; 1st edition (January 21, 2020)
  • Language: : English
  • Hardcover : 640 pages
  • ISBN-10 : 1628603976
  • ISBN-13 : 978-1628603972
  • Item Weight : 5.64 pounds
  • Dimensions : 8.5 x 1.7 x 10.88 inches
  • Customer Reviews:
    4.8 out of 5 stars 1,427 ratings

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4.8 out of 5 stars
4.8 out of 5
1,427 global ratings
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Top reviews from the United States

Reviewed in the United States on January 22, 2020
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Reviewed in the United States on January 25, 2020
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Reviewed in the United States on January 28, 2020
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Reviewed in the United States on January 21, 2020
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5.0 out of 5 stars The MOST COMPREHENSIVE book on Health and Longevity
Reviewed in the United Kingdom on January 26, 2020
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5.0 out of 5 stars The MOST COMPREHENSIVE book on Health and Longevity
Reviewed in the United Kingdom on January 26, 2020
There is lots of science nowadays showing the great ways you can improve your health and longevity. Lots of books, some focusing on specifics like brain health, to eating and others on exercise. So many podcasts also available and there is lots of great content and great breakthroughs in biohacking that can transform your health. It is tough though given the amount of information and also the differences in opinion.

I have been listening to Ben's podcast and also did one of his courses with Mindvalley and I really trust his opinions. If you haven't listened to his podcast, I highly recommend it but you don't need to, to make the most of this book.

Ben has produced the most comprehensive book I have ever come across on this subject and what's more if you thought the massive 640 pages was lots, it has further additional information available online to complement what is on the book. Apparently there was over 1200 pages of content but of course, they did have to cut down the size of the book. If you are thinking the book is expensive, the price actually reflects how large it is and sheer content there is in this. You would have more than 3 books of information within that book easily plus it has colour and looks really good on the coffee table.

However, the size of the book is not an issue as you don't need to read this from cover to cover. If you click on the image of the book on this page just below where it says Look inside, you can get a good sense of what the book will be covering. Ben also recommends in the book that you can dip into any of the chapters you want based on your need so there is no need to get overwhelmed with needing to read a massive book and understand it before you can do anything with it.

There are 21 chapters in the book which cover themes around your brain, stress, eating for the brain (food, supplements, nootropics, biohacking gear), sleep, fat burning, muscle building, recovering (and biohacking gear for this as well), healing your gut, nutrition, immune system, how to test and track your health, sex, longevity, different diets and also how the environment can be hacked to improve your health.

Each chapter is very comprehensive, Ben has made the language simple and easy to understand and what I really love about the book is that it has colour and lots of useful pictures as well to help you understand key concepts e.g. Stretches and exercises have illustrations which are very useful and there are summary tables as well.

Each chapter ends with a summary called The Last Word. This simplifies and summarises what has been discussed in the chapter and then it finishes off with a section - One Thing You Can Do This Week. I really like this as it moves the focus to application and allows you to do something with what you have learnt. The book really helps you to start putting in place action and doing something to improve your health.

If you want a deeper dive into any of the topics then at the end of each chapter you will be able to look at resources on the website which also include links to podcasts, recommended tools, supplements, references, videos and much more.

The only disadvantage this book has is its size. This is a massive book. It is more than double the size of a typical hardback. So the size and weight mean it is not a portable book you can carry around while travelling to read though you could use it for exercise on the move. It is about 2.5 Kgs! I have included some pictures for comparison.

I read Super Humans by Dave Asprey some time back and also been reading Lifespan by David Sinclair and Brain Wash by David Perlmutter. Health is a very important priority for me this year and this decade and I know Boundless is going to be a key resource to support me with this.

If you are looking to navigate this complex world to improve your health and one resource that will support you in doing this then get this book. It is a game-changer and can really help you understand how to improve your health, whether you are a complete newbie or a seasoned biohacker.
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3.0 out of 5 stars A very heavy book ponderous in written style and too technical for the level at which it is pitched
Reviewed in the United Kingdom on March 30, 2020
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14 people found this helpful
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2.0 out of 5 stars Informative but mostly useless
Reviewed in Germany on March 3, 2020
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5.0 out of 5 stars An encyclopedia for enhancement
Reviewed in the United Kingdom on February 8, 2020
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3.0 out of 5 stars Not as perfect as everyone makes it seem
Reviewed in Canada on March 28, 2020
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