Power Pilates

Devotees of Power Pilates have these classes to thank for their stellar posture and backsides, and the positive mantra on the studio’s wall—“Consistency is the key to change”—will help you get your ass to class each day. Ditto for the motivating guarantee on its site: It says you’ll feel better after 10 classes, look better after 20 and earn a new body after 30. If you’re wondering how that’s possible without cardio, it’s because classes feature more than 500 moves that lengthen and strengthen muscles without bulk—which means you can fit into your skinny jeans without hitting the treadmill.