Women participate in a workout routine during a Zumba toning class at the Barber Physical Activities Center aboard Marine Corps Base Quantico on July 2, 2013. The class implements various dance moves and music to burn calories. - Women participate in a workout routine during a Zumba toning class at the Barber Physical Activities Center aboard Marine Corps Base Quantico on July 2, 2013. The class implements various dance moves and music to burn calories.