Tracy Anderson studio

"We're longtime fans of the Tracy Anderson Method for a million reasons: It's a lifestyle approach to fitness, meaning that you never peak; it's fun (and hard); and it works. The studios in Studio City and now in Brentwood make following the method easy, as everyone's in it together. Membership is more expensive than your average gym but includes unlimited classes, and depending on the tier, semiprivate training sessions. The trainers are kind but tough—you will sweat (and melt inches)."