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Andy Stern is a Certified Personal Trainer, Co-creator, and Vice President of Talent and Programming for Rumble Boxing.

Stern has been named "One of the top group fitness instructors in the country" by Yahoo Finance. With 12+ years in the fitness industry, Stern has coached thousands across the world, including notable names such as Justin and Hailey Bieber, Kevin Hart, Jason Derulo, Chris Paul, Ludacris, Bebe Rexha, and others. 

Andy is also a former NPC Men's Physique Champion, NYC Marathon Runner, 4x Tough Mudder, and CBS Million Dollar Mile Winner.

Outside Fitness, Andy is a husband, father, activist, and motivational speaker, but most notably known as "The Mayor of Uppercut City". Stern is fluent in analogies and rests assured, that every class will end in an 'ULTIMATE FLEX'.

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