How do you become a dancer... or just look like one? Ballet Barre Fit is an hour long, total body workout which uses ballet technique to burn fat and lengthen muscles. Does achieving a lean, long dancer look interest you? In Ballet Barre Fit: arms acquire definition; thighs thin out; abs flatten. Posture improves (as the back becomes stronger), and your "seat" lifts. Regular ballet training transforms the body - look at any ballet dancer - that's your evidence. Ballerinas don't train at the gym.