This revolutionary workout system for fast, effective muscle strengthening, power development, stabilization and toning, was invented by California physical therapist, Bruce Hymanson. This core-sharpening, functional training system is easy to use and effective for nearly everyone, regardless of age or ability. The Bodyblade has been proven effective with users from rehab patients to professional athletes, and with a minimal storage footprint of only three inches, there's nowhere the Bodyblade can't go.