Watch Zumba Fitness: Rush (2011) : Full Movie Online Free A 20-minute workout to amp you up. Need a jolt of energy? Feel the rush with Zumba star trainers Kass Martin and Loretta Bates in this fast-paced, 20-minute workout designed to reach an endorphin release-zone and bring you back invigorated! Whether you're tight on time or need a quick pick-me-up, this workout will give you a rush that lasts all day.