Briana Evigan

Hip hop classes and ballet are what I've been keeping up with, and of course my usual abdominal workout, which consists of 500 sit-ups a session. Or I take a 30-minute abs class at my gym. But dance classes are a full-body cardio workout, which always brings me success and keeps me feeling great.

The thing about dancing - what it taught me all those years - is it gives you an amazing sense of discipline in forcing yourself to do things that you know are good for you but you don't really want to do.