Whether she's judging American Idol or globetrotting with her beau Casper Smart (who is 18 years her junior), Jennifer Lopez is hotter than ever. And while "Jenny From The Block" does her fair share of high-energy performances, she stays fit thanks to the Latin dance-inspired workout Zumba. In a recent interview with Redbook, Lopez said, "As women, we tend to give away a lot. We take care of a lot of people, and we can't forget to take care of ourselves. If that means once a week you're going to go off without the kids... or join a Zumba class, or take a painting class, or whatever, you've just got to do it." Take J.Lo's advice and take some 'you-time' by signing up for the latest cardio craze -- you'll loosen up and possibly lose some weight!