“Joe Decker is my hero. He'll change the way America works out.”
Al Roker, Co-Host of NBC's Today Show
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
“I am pushed beyond what I could ever do on my own.
I have gone down 3 pants sizes, see more muscle definition throughout my entire body, and my confidence in both my physical appearance and in my athletic ability has increased tenfold.” Read Her Story
Lauren Adamek, Gut Check Member
“It's more like playing than working-out.
They have pushed me and motivated me as I've gotten stronger and more confident. I've lost 20 lbs. Now rather than stopping to catch my breath at the top of the stairs I can run 30 miles!” Read His Story
Jon Choy, Gut Check Member
Gut 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… The same workouts that Joe Decker used to become the "World’s Fittest Man."
Joe leads Gut Check Fitness with a world-class team of instructors, offering unmatched instruction, high-energy workouts and positive reinforcement. All Gut Check Fitness classes and events are tailored to challenge every athlete, with a built-in social network of fun-loving people. Try a Gut Check Fitness Boot Camp workout today.
A big SHOUT OUT to the Nagle brothers and the Gut Check Sactown crew for completing the Spartan Trifecta this weekend. Great job guys! #gutcheckonthego #naglebrothers ... See MoreSee Less
Thank you Mark for taking the interest in my story, the interview to hopefully motivate/inspire our soldiers dealing with PTSD and all that you do to support them. Also, a big thanks to Dean & Black River Rush OCR training for hosting our Good to Great tour in Townsville. Truly enjoyed our time there. Wish you both the best and keep up the great work guys. #goodtogreat #blackriverrush #gutcheckontheroad ... See MoreSee Less
Who's joining us Veteran's Day weekend, Nov 12th for our Annual CAF Gut Check Challenge to pay tribute to all the brave men & women that have served this great Nation of ours?! 3-4 hours at Lake Poway & Mt Woodson of nothing but good times with all your fit friends. What better way to honor this special weekend. REGISTER before Oct 11th to receive early bid pricing. Are you ready for a Gut Check?! ... See MoreSee Less