You may have heard celebrities like Kelly Ripa and Lisa Rinna
raving about the transformative effects of Physique 57
, a boutique fitness class that combines ballet, Pilates and isometrics. The intense moves done on the floor and at a ballet barre are designed to improve your posture and strengthen your core, which can help you look longer and leaner. The studios are currently located only in New York and Los Angeles, and classes can become addictive and prohibitive ($31-36 for one class; $110-$250 for the first month
). For as little as $5, you can "rent" a video
for up to 48 hours led by the same graceful-but-ripped instructors who teach at the studios (all are dancers). You'll need a sturdy piece of furniture and a set of hand weights for some workouts, but you might not need to get a second job to afford them.