Herschel Walker

Former NFL Running Back, 1982 Heisman Trophy Winner & Mental Health Awareness Advocate

Ronda Rousey

Former UFC Champion & WWE Wrestler; Olympic Medalist; Actor & Author

Our Fight: A Memoir

Damon Wayans Jr.

Actor, Known for his Roles in "Happy Endings" and "New Girl"

Gilles Marini

Actor, Philanthropist, Adventurer

Joe Rogan

Stand-Up Comedian & Host of The Joe Rogan Experience Podcast

Gina Carano

American Actress, Television Personality, Fitness Model, and Former Mixed Martial Artist

Miesha Tate

Female Mixed Martial Artist & UFC Fighter

Georges St-Pierre

Former UFC Welterweight Champion

Chris Ashworth

Chris played Sergei Malatov, a.k.a. "The Russian", on HBO's "The Wire".

Dana White

President of the Ultimate Fighting Championship (UFC)

Randy Couture

Only Athlete in UFC History to Win a Championship After Becoming a Hall of Fame Member & Oldest Title Holder Ever in the UFC and MMA

Jean-Claude Van Damme

Belgian martial artist, actor, and director best known for his martial arts action films.

Alexis Davis

Mixed Martial Arts and UFC fighter

Sara McMann

2004 Olympic silver medalist in freestyle wrestling, MMA and UFC fighter

Donnie Yen

Actor, Martial Artist, Action Choreographer & World Wushu Tournament Champion

Cat Zingano

Pioneer of Women's MMA & First Woman to Win Fight of the Night; Founder of The Cat Zingaro Overcoming Loss Scholarship for Bereaved Students

Clay Guida

Joseph Benavidez

Renan Barao

Alistair Overeem