Mark S. Mastrov, veteran builder behind 24 Hour Fitness and Crunch, returns to scaling gyms and ops. Adam Sedlack, CEO of UFC Gyms, is expanding into jiu-jitsu studios and recovery/medical-wellness. Bill Davis, CEO of ABC Fitness, is turning the company into a tech platform with payments, data, and AI. They discuss tech-driven gym experiences, new business models, recovery and longevity services, and the rise of personalized, data-led offerings.