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.

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.

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.

There is a new revolution happening in sports as more and more athletes are basing their success on this game-changing combination: health, nutrition, training, recovery, and mindset. Unfortunately, the evidence-based techniques that the expert PhDs, academic institutions, and professional performance staffs follow can be in stark contrast to what many athletes actually practice. When combined with the noise of social media, old-school traditions, and bro-science, it can be difficult to separate fact from fiction.