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Gut Check featured in the following media
Ryan, Gut Check Fitness Sacramento Owner

Gut Check Los Angeles Owner

Brad Mallie is a personal trainer, ultra endurance athlete and adventure racer. He actively trains for and competes in the hardest races in the world. Brad has been a personal trainer working with clients in Woodland Hills and the greater San Fernando Valley for the past 15 years.
Read His Story

Joseph Shanni, Gut Check Fitness Member

“I couldn't be more excited that Gut Check Came To L.A.

I have been working out with Brad for the past five years. He first introduced me to Gut Check two years ago when they came to Griffith Park. I loved it. It was unique, fun & very challenging. From that moment I was hooked. I knew that there was no other way that I wanted to train. Since then Brad has trained me (and participated with me) for the 2012 and 2013 Gut Check Challenges, which were two of the most challenging and rewarding fitness events I have ever participated in.”

Joseph Shanni, Gut Check Member

Diane Ruben, Gut Check Fitness Member

“At 50, I am in the best shape of my life

I started working out with Brad at a personal low point in my life. I was overweight and out-of-shape. A year and half later, I was in good enough shape and had the confidence to participate in an overnight Gut Check Fitness Suck event, something far outside my previous comfort zone. At 50, I am in the best shape of my life and look to Gut Check to help me get to the next fitness level. Workouts are always fun, extremely challenging, and rewarding. Brad is a tremendous motivator, very dedicated to his clients, and an inspiration as he works out right beside us.”

Diane Ruben, Gut Check Member

Stella Lee, Gut Check Fitness Member

“Workouts are intense and never boring!

The variety of workouts is the reason why I’ve stayed with Gut Check Fitness. One day we are outdoors pushing around a 300 lb tractor tire, the next time we're running up and down an 8-story parking structure and doing suicides, burpees and kettlebells!”
Read Her Story

Stella Lee, Gut Check Member

Worlds Fittest Man, Joe Decker, Founder of Gut Check Fitness

Joe Decker, Founder

Joe Decker, recognized as the “World’s Fittest Man," after breaking the Guinness World Records® 24-Hour Physical Fitness Challenge, founded Gut Check Fitness. Joe is also the two-time winner of the Spartan Death Race and has competed in many of the world’s toughest endurance events, including the Raid Gauloises, the Badwater 135, the Marathon des Sables, and The Tough Guy Challenge in England. Read His Story

Gut Check DefinitionGut Check," a term commonly used in the military, means “We’re going to test you and try to break you to find what you’re truly made of!” Gut Check Fitness offers world-class Boot Camp Training for those willing to test their courage, determination and character. We also host elite events nationwide, including the King of the Hill Trail Running Series, The SUCK and Gut Check Challenge. Gut Check Fitness was voted World’s best, toughest and most creative workouts. Get in the best shape of your life with tough, fun and energizing workouts.