How I Franchised This The 'Secret Sauce' of Scaling: Boxing, Self-Defense, and Viral Brands with Andy Stenzler
Feb 19, 2026
Andy Stenzler, serial entrepreneur behind Rumble Boxing, Cozy, Kidville, and THE PACK, is a product-driven scaler who turns fitness into cultural brands. He talks boxing-as-fitness, the Mr. Miyagi-inspired self-defense workout THE PACK, solving gear problems with clever hacks, and using data, timing, and repeatable systems to franchise and scale concepts.
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From Coffee Bar To Global Brands
- Andy Stenzler started with a coffee-bar that became Cozy, then Kidville, then Rumble, each evolving from solving real customer problems.
- Those early experiments taught him food and service margins, and prepared him to scale bigger concepts like Rumble and The Pack.
Data And Timing Create Breakouts
- Data and timing make a new concept catch on; Andy scraped competitors' booking pages to find the best launch location for Rumble.
- He also stresses continuous product reinvention so competitors copy an older version of you, not the latest.
Perfect The Prototype Before Scaling
- Get the first unit right before scaling and document your systems thoroughly.
- Build simple, transferable tools so you can expedite franchising when demand arrives.