We all know and love Richard Simmons. He's 62 years old, but he still has more energy than even the youngest, fittest fans who flock regularly to his sweat classes at Slimmons Studio. They cost $12 per session, are held three days a week, and basically function as comedy show as much as workout. The flamboyant, bedazzled short-shorts–wearing exercise guru doesn't hold back, berating attendees to "move those asses" to the sounds of pop divas like Lady Gaga, Madonna and Beyonce. Despite the yuks, Simmons' classes are serious stuff, and if you go you will burn mucho calories. Thought they've been around for decades, they've become chic of late, attracting drag queens, hipsters and power gays alongside Simmons' sizable female following. Those who participate quickly discover that belly laughs can make the burn of butt-lifts a bit more bearable. 9306 Civic Center Drive, Beverly Hills; (310) 275-4663, richardsimmons.com.

—Lina Lecaro