Unleash Your Potential
Welcome to GM3’s MMA Institute
Home of Green Bay’s Original MMA Team
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Founded by UFC veteran Gerald “GM3” Meerschaert III, GM3’s Institute of MMA is Green Bay’s premier destination for mixed martial arts training. With over 50 professional fights and a reputation for slick submissions and high-level fight IQ, Gerald brings world-class experience to the mats right here in Green Bay.
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As Green Bay’s original MMA team, we built fighters and a tight-knit combat community long before the sport went mainstream. Whether stepping into the gym for the first time or preparing for your next bout, GM3’s Institute offers expert coaching, real fight experience, and a supportive atmosphere where champions are made.
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Come train where the pros do and become part of Wisconsin's proudest MMA legacy.
State-of-the-Art Training Facility
Our Schedule
MMA Fitness Programs
Led by Bryan Bautista, Jordan Berg & Alex Brockway
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A high-energy striking workout combining boxing, and kickboxing/Muay Thai to build strength, conditioning, coordination, and confidence. Led by experienced coaches, each session delivers technical instruction with an intense, full-body training experience.
Brazilian Jiu-Jitsu
Led by Black Belt Troy Polson
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A structured, technique-driven BJJ program focused on fitness, fundamentals, and skill development in a welcoming environment. Classes blend technical instruction, controlled live training, and practical application for all experience levels.
212 Studio Fitness
Led by Jen Poljacik
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The partnership brings together the best of both worlds: high-level training, dynamic energy, and a truly unique fitness environment.
Participants can enjoy group HIIT, boxing, and strength classes, along with private and small-group personal training, all within a setting that inspires focus, intensity, and results. It’s a one-of-a-kind experience designed for those looking for something beyond the ordinary gym.
Team
Dedication. Expertise. Passion.
Meet the instructors
Contact Us Today For a Free Trial!
709 S. Oneida St Suite 8
Green Bay, WI 54303
920.384.3438
