Fitness Technology Developed for Astronauts Now Available in Portable Gym >>> OYO DoubleFlex >> www.oyofitness.com DoubleFlex from OYO Fitness Offers Weight Training Benefits Without Weights TWITTER | FACEBOOK | INSTAGRAM | YOUTUBE | GOOGLE+ Kansas City, MO – OYO Fitness has launched DoubleFlex, a total body portable gym, powered by SpiraFlex® technology developed for NASA, […]