Ronda Rousey
Staying strong is part of the job! This UFC fighter trains hard and eats healthy in order keep up her enviable physique.
Miranda Kerr
Just by looking at her hot bod, you'd never guess Miranda is a mom! The sexy supermodel works out 3-4 times a week and sticks to a super healthy diet! In fact, Miranda's so passionate about healthy living, she's even a certified health coach practitioner!
Pippa Middleton
Pippa's toned tush got everyone talking after the royal wedding last year! So how did she get in such great shape? The royal sister maintains a very active lifestyle, including running, Pilates and skiing— just to name a few!
Gisele Bundchen
This hot mama likes to mix it up! Dance, tai chi, kung fu and yoga are just a few of the things she does to stay in such great shape!
Brooklyn Decker
This body didn't come easy for Brooklyn Decker. She really has to watch what she eats— always maintaining a balanced diet, plus she does intense total body cardio workouts on top of that. All of that hard work is definitely paying off!
Reese Witherspoon
When it comes to her workouts, Reese is a fan of the great outdoors. She's often seen out running or hiking—in fact, she was out pounding the pavement a lot while she was pregnant!
Ashley Greene
No easy shortcuts here! Pilates and good old-fashioned gym workouts are Ashley Greene's secrets to staying in shape!
Halle Berry
She may be petite, but Halle is a pint-sized powerhouse! The actress does strength training and kickboxing to keep her muscles tight and toned.
Cameron Diaz
One look at those arms and you know Cameron is hitting the gym hard! She's had the same trainer for over a decade and from the looks of it, their relationship is a pretty healthy one!
Jennifer Lopez
This busy mom is all about balance. She combines yoga, strength training and cardio with healthy eating to keep her sexy curves looking just so!
Alessandra Ambrosio
The Victoria's Secret model stays in such great shape, she didn't even let a pregnancy get in the way of her workouts! In fact, Alessandra was still walking the runway two months into her pregnancy!
Julianne Hough
Obviously, dancing helps Julianne keep her bangin' bod in shape, but this gorgeous girl likes extreme sports, too. She enjoys snowboarding, skiing and even skydiving!
Gwen Stefani
Gwen Stefani is no slouch! The sexy star hits the gym five days a week and told Harper's Bazaar that her fitness regimen is "torture"!
Jessica Biel
Oh, what we wouldn't do for Jessica Biel's body! Nobody can ever say she doesn't work for it, though. In addition to eating well and working out, Jessica impressed us even more in 2010 as she took her fitness to another level—literally—when she climbed Mt. Kilimanjaro.
Jennifer Aniston
Everyone wants Jennifer Aniston's body! So how can we get it?! Easier said than done! Jennifer sticks to specialized diets and works out HARD! She does yoga, spinning and spends a ton of time on the elliptical.
Madonna
From Barre to Pilates to working out with the hottest celeb trainers, the 54-year old singer does whatever it takes to keep her body in fighting form!
Michelle Obama
Michelle Obama has made her passion for fitness very clear with her "Let's Move" campaign and one look at the fit 'n' fab first lady makes it very clear that she practices what she preaches!
Gwyneth Paltrow
Workouts with celebrity trainer Tracy Anderson help Gwyneth keep her muscles looking long and lean.
Marisa Miller
How can you get amazing abs like Marisa Miller? The supermodel eats a balanced diet and stays extremely active, telling Shape magazine that working out is a "necessity" for her.
Anna Paquin
The True Blood star has to show a lot of skin and thanks to her fitness regimen, we'd imagine she's quite comfortable doing so!
Lady Gaga
Despite the recent controversy about her weight, Gaga has to stay in great shape to dance her heart out for two hours straight on stage every night. The singer is a fan of Bikram yoga and has even taken celebrity trainer Harley Pasternak on tour with her.
Hilary Swank
Hilary had to pack on 19 pounds of muscle to get the boxer's body she showed off in Million Dollar Baby, but the star seems to have kept up her fitnes regimen and is still looking absolutely amazing!
Jada Pinkett Smith
Will's wife manages to balance fitness and family with a regimented workout schedule that keeps her body in tip-top shape!