04 Strength is a community-driven training gym in Kerrville, Texas, founded in 2017 by David and Lizi Riley. The gym centers on organized, high-intensity workouts designed to be scalable across experience levels, allowing the same class to challenge seasoned athletes while remaining approachable for beginners. Its coaching emphasizes clear instruction, consistency, accountability, and a supportive group environment, combining a garage-gym spirit with a structured, welcoming training culture.