Coeur d'Alene, Idaho
About NextGym
NextGym is a cutting-edge fitness studio dedicated to optimizing health and performance through innovative technology and personalized training. Our facility features advanced equipment including ARX adaptive resistance, Vasper compression cardio, Hugo Pro PEMF mats, PlatinumLED red light, Power Plate, and the Seca body scanner to accelerate recovery and enhance results.
Led by Madi Hamilton and her team, we deliver tailored functional training to help you build strength, improve endurance, and recover smarter — a holistic, high-tech approach in a welcoming, community-driven environment.
The Space
Step inside the studio.
Purpose-built in the heart of Coeur d'Alene, with thoughtful design, natural light, and every modality under one roof.
The Team
The people behind the technology.
Madi Hamilton
Founder & Head Coach
Madi Hamilton, formerly Madi Brown, is the driving force behind NextGym. A dedicated trainer since 2020, she holds a Bachelor's in Kinesiology with an emphasis in health and fitness. A standout collegiate golfer at North Idaho College and Lewis-Clark State College, Madi was named NIC's Athlete of the Decade. Certified through Titleist Performance Institute, NASM Golf Fitness and Senior Fitness, she specializes in functional training focused on balance, mobility, and flexibility. Every program begins with an initial screening, so the work is genuinely personalized to your goals.
Steve Horne
Coach · U.S. Army Veteran
Steve is a fitness coach and military veteran with over a decade of coaching experience. He served in the U.S. Army with the 25th Infantry Division — an experience that instilled the discipline, resilience, and leadership that now define the way he coaches. His programming centers on strength development, intelligent accessory work, and individualized plans designed around each client's goals, lifestyle and capacity for consistency. Equally committed to nutrition, Steve helps clients build sustainable habits alongside their training.
Attiyahna Simpson
Personal Trainer · ISSA Certified
Attiyahna brings a rare combination of athletic credibility and genuine passion for people. A certified personal trainer and former collegiate athlete, she understands firsthand what it takes to perform at a high level — and how to translate that into results for everyday clients. Known for a high-energy, positive coaching style, she creates an environment where hard work and enjoyment coexist.