Dr. Mike Israetel is a renowned sports physiologist, coach, and educator, best known as the co-founder of Renaissance Periodization (RP), a company that delivers evidence-based training and nutrition programs. With a Ph.D. in Sport Physiology, he’s helped shape the fitness world by bridging the gap between scientific research and practical application.

Israetel gained popularity for making complex topics like muscle growth, fat loss, and periodization easy to understand and apply. His humorous, no-nonsense style on social media and YouTube has earned him a loyal following among fitness enthusiasts, bodybuilders, and coaches.

He’s also an accomplished athlete—competing in bodybuilding and holding a black belt in Brazilian Jiu-Jitsu. His books, including The Renaissance Diet and Scientific Principles of Strength Training, are widely used in both academic and athletic settings.

Dr. Mike’s blend of elite-level knowledge, real-world experience, and sharp wit has made him one of the most respected and recognizable voices in modern strength and physique training.

Gunnar Peterson is a renowned personal trainer celebrated for his work with celebrities and professional athletes. Based in Beverly Hills, he has over 30 years of experience in the fitness industry. Peterson is recognized for his expertise in functional training and innovative fitness techniques. He has worked with clients from the NBA, NHL, NFL, MLB, USTA, professional boxing, and various NCAA sports. In 2017, he became the Director of Strength and Endurance for the Los Angeles Lakers. In 2022, he joined F45 Training as their Chief of Athletics. Peterson is also known for creating the “Core Secrets” workout system and has authored books, including “G-Force: The Ultimate Guide to Your Best Body Ever.” His dynamic approach and dedication have made him a leading figure in the fitness community.

Don Saladino is a renowned fitness entrepreneur and coach, celebrated for training numerous celebrities, including Ryan Reynolds, Blake Lively, and Hugh Jackman. With over 25 years in the fitness industry, he emphasizes strength training and functional fitness to help clients achieve peak performance. In 2005, Saladino opened his first gym in New York City and later transitioned to a global online fitness platform, offering programs accessible to a wide audience. His expertise is frequently featured in publications like Men’s Health and Muscle & Fitness, and he has appeared on various media outlets demonstrating fitness techniques. Saladino’s dedication to health and wellness has established him as a leading figure in the fitness community.

‘Stone Cold’ Steve Austin (born Steven James Anderson) is a retired professional wrestler, actor, and media personality, widely considered one of the most iconic figures in WWE history. He rose to fame in the late 1990s with his anti-authority persona, beer-fueled bravado, and legendary catchphrase, “Austin 3:16.”

After early success in WCW as “Stunning” Steve Austin, he joined the WWF in 1995 and quickly reinvented himself as “Stone Cold.” His rebellious character and intense feuds—especially with Vince McMahon and The Rock—helped drive the “Attitude Era,” a golden age for WWE viewership and popularity.

Austin is a six-time WWE Champion and the only wrestler to win the Royal Rumble three times. His in-ring career ended in 2003 due to injuries, but he remains a fan favorite through occasional WWE appearances, his podcast, and his TV show, Broken Skull Challenge.

In 2009, he was inducted into the WWE Hall of Fame, solidifying his legacy as a game-changing superstar who redefined what it meant to be a wrestling icon.

Chris Walker is a certified personal trainer at Top Tier Performance, a fitness facility located in Brook Park, Ohio. With over a decade of personal training experience, including six years dedicated to coaching others, Chris specializes in bodybuilding, boxing, and powerlifting. He is an advocate for an active and healthy lifestyle, currently focusing on powerlifting to enhance strength and refine techniques aimed at injury prevention.

Big Rob is a former Division I football defensive tackle whose journey from adversity to elite strength is nothing short of inspiring: After his college football career, Rob was diagnosed with testicular cancer—a major setback that impacted both his health and overall conditioning. Refusing to let the diagnosis define him, Rob began training with renowned strength coach, Matt Wenning, who guided him through a total transformation.

Under Wenning’s programming and mentorship, Rob rebuilt his foundation and exceeded every prior benchmark. In just 24 months, he became the strongest he had ever been, achieving a 500lbs bench press and a 700lbs deadlift in his first powerlifting meet. His comeback was not just physical—it was a testament to resilience, discipline, and expert coaching.

Now, after 17 years of training with Wenning, Rob continues to be a force in the gym and a powerful example of what’s possible with unwavering determination and the right support system.