Joseph Sakoda, Known globally as RULK or “Da Rulk,” is a trailblazer in functional movement and human performance. Creator of Raw Functional Training® (RFT®), RULK has developed a methodology trusted by elite military units, first responders, and top athletes across the NFL, NBA, MLB, UFC, MLS, WSL, NASCAR, and F1. He also works with A-list celebrities, including those portraying superheroes on the big screen.

With a background in kinesiology and biomechanics, RULK’s training system is designed to build real-world strength—improving mobility, resilience, and nervous system performance through dynamic, bodyweight-based movement. His philosophy: “Don’t just train to look like a superhero. Train to move like one.”

Driven by service and purpose, RULK has dedicated his life to empowering those who protect and inspire. His work extends into the community through efforts like the RULK PACK, a sensory support kit developed in partnership with CHOC and the Thompson Autism Center to assist families with urgent care needs.

Relentless, mission-minded, and grounded in impact, RULK is redefining what it means to train for life.