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The Fit 5: Tips to Feel (and Look) Like a Star!

From Janet's berry sweet treats to Kristin Davis's sunscreen of choice, get the scoop on how to look fab like the stars. By Serena Kappes

GET AN 'IRON' CORE

To sculpt his body for Iron Man, Robert Downey Jr. endured rigorous workouts at the hands of trainer Brad Bose. One of Bose's favorite toning tools for his celebrity clients? The AB-Inforcer, a device that gets your spine in a neutral mode to work your core muscles properly and uses sensory feedback to alert you when you're out of alignment. "It teaches the difference between using your abs and using your hip flexors," says Bose, "which are usually the root of a lot of postural problems." Tighter abs and better posture? Sign us up! – Maureen Harrington



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