Choose the Class
Training Programs
Gain the tools to unlock mobility without losing strength. Learn proven drills and body-hacks that deliver fast, measurable results—whether you’re coaching others or leveling up your own flexibility.
✅ Practical. Powerful. Proven.
The gold standard in kettlebell, barbell, and bodyweight instruction. Build real-world strength, master precise technique, and earn your spot in the School of Strength.
✅ Serious standards. Serious results.
Dive into the time-tested art of club swinging—build shoulder mobility, grip strength, and body control with this powerful tool. Learn ancient methods modernized for today’s training and elevate your skill set.
✅ Cultural legacy meets modern performance.
People About Us
Staff
Our Instructors
Jon Engum
Jon is a peerless teacher and martial arts grandmaster. An 8th Dan Kukkiwon Taekwondo Grandmaster, he also holds Master-level black belts in Hapkido and Kumdo. Jon is a StrongFirst Certified Master Instructor, teaching globally and hosting kettlebell, barbell, and bodyweight certifications. He’s also the founder of Flexible Steel—a system fusing martial arts flexibility, kettlebell strength, and modern movement science into one powerful platform.