Join Lululemon for the sixth night of The Challenge and sweat it out with Or Artzi from Equinox. Her creation, RTB, brings the party to barre, mixing ballet, pilates, and yoga techniques with heart-racing drills and lots of booty shaking! RTB intelligently targets each muscle group with high reps and small range of motion, with just enough cardio to get that caloric burn to lean you out. The Challenge: RTB with Or Artzi Details & RSVP
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