Get Buff with Mario Lopez!

Mario Lopez cut a rug for last year's competition, but these days, the Dancing with the Stars alum is shaking his stuff as a spokesman for PepsiCo's Smart Spot Dance program (http://dance.smartspot.com), which continues in Dallas on Sept. 28. "With obesity so prevalent, we wanted to get people moving – especially moms and kids," says Lopez, who offers PEOPLE some fitness tips of his own. ( Photo by: Michael Buckner/Getty )