Julianne Hough Is a Knockout

How does Julianne Hough stay in such great shape? Well,apparently, part of her firm physique can be credited to the boxing-basedregimen she's been doing. The singer/actress/dancer looked like she got apretty intense workout in with a personal trainer in Miami, where she'sshooting the film "Rock of Ages" with an all-star cast including TomCruise, Malin Akerman, Russell Brand, Catherine Zeta-Jones, and Alec Baldwin.

During the outdoor training session, Julianne donnedboxing gloves, threw some punches, and got down for a set of push-ups. But it'sall worth it. In a recent interview with Women's Health,Julianne talked about the benefits of squeezing exercise in when she's on theroad. "It's so hard to stay fit while you're traveling, but for me italways makes me feel better on the inside if I've worked out," she said.

And we're sure having a girlfriend in such great shapemakes her beau Ryan Seacrest feel better, too!

More Celebrity Features on Yahoo!:
Julianne Hough: 'Weight Criticism Freaks You Out'
Stars Hit the Hills
Kim Kardashian's Workout Secrets

Follow omg! on Twitter