Mat Fraser is undisputedly the fittest man in CrossFit history for winning the CrossFit Games an unprecedented five times. A student of engineering, Fraser optimized his body like a machine, and his absolute dedication to the training program he designed for himself is now legendary. Fraser became a master of identifying his weaknesses and then seeking out training methods to improve them, and he's idolized in the fitness community for his relentless pursuit of peak performance. It's not hard to see why he achieved so much success - but how is a different question.

Tia Toomey, the world’s fittest woman, has won the CrossFit Games an incredible six years in a row and is undeniably a true warrior. She has also trained for the Winter Olympics in bobsledding, competed in the Summer Olympics in weightlifting, and was a Commonwealth Games gold medalist. She is, in short, one of the most accomplished and dominant athletes in human history. But for Tia physical fitness is only a small part of overall strength. More important is building mental toughness.

Dottir is two-time consecutive CrossFit Games Champion Katrin Davidsdottir's inspiring and poignant memoir. As one of only two women in history to have won the title of “Fittest Woman on Earth” twice, Davidsdottir knows all about the importance of mental and physical strength. She won the title in 2015, backing it up with a second win in 2016, after starting CrossFit in just 2011.

In The Champion's Mind, sports psychologist Jim Afremow, PhD, LPC, now offers the same advice he uses with Olympians, Heisman Trophy winners, and professional athletes, including tips and techniques based on high-performance psychology research, such as how to get in a "zone," thrive on a team, and stay humble; how to progress within a sport and sustain excellence long-term, and customizable pre-performance routines to hit full power when the gun goes off or the puck is dropped.

Reigning CrossFit world champion Rich Froning is "the fittest man on Earth". He's fast, he's strong, and he's incredibly disciplined. But it takes more than physical strength to compete and win at an elite level. It takes incredible mental and spiritual toughness as well. And it is the precise balance of all three that makes Rich Froning a champion.

New York Times best-selling author and ultramarathoning legend Dean Karnazes has pushed his body and mind to inconceivable limits, from running in the shoe-melting heat of Death Valley to the lung-freezing cold of the South Pole. He’s raced and competed across the globe and once ran 50 marathons, in 50 states, in 50 consecutive days.

Cameron Hanes discovered his true passion for bowhunting when he was twenty. Inspired by the physical challenges of stalking elk in the Oregon wilderness—traversing mountainous terrain, braving erratic weather, and evading his quarry’s even more dangerous predators—he began an ever-evolving journey of self-improvement. To become the best bowhunter of wild elk, to the caliber he believed he could be, Cam realized he would need more than archery skills.

The greatest athletic performances spring from the mind, not the body. Elite athletes have known this for decades, and now science is learning why it's true. In his fascinating new book, How Bad Do You Want It?, coach Matt Fitzgerald examines more than a dozen pivotal races to discover the surprising ways elite athletes strengthen their mental toughness.

CrossFit superstar Sam Briggs, a.k.a. ‘The Engine’, is a true hero in the sport. This is the story of how she got to the top and battled with everything she had to stay there. Despite the numerous setbacks and debilitating injuries that have plagued her in the years that followed, when most other athletes would have thrown in the towel, Sam has fought and continues to fight, to be the very best that she can be.

True toughness involves far more than what most of us believe and has far greater influence on our success and fulfillment than we imagine. Toughness is defined by four interdependent elements: Character - who are you and are you secure in your identity? Capability - what are you able to do? Capacity - what are you able to withstand? And commitment - what are you willing to do? Being truly tough is a genuine command over ourselves and an ever-increasing mastery of the mental, emotional, and physical elements that define us and determine the course of our lives.