Queen B worked up a sweat for Michelle O...
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Our March cover girl shares her fitness and diet tips, plus her fresh new outlook on life!
Chris Hemsworth, Tom Hardy, and other smokin' celebs are posting their hot bodies all over Instagram.
They may go one-on-one with celebs at the gym, but these star trainers put fitspiration at your fingertips too.
With the Biggest Loser season 15 finale airing tonight, host Alison Sweeney shares her advice on how to reach your fitness goals.
Check out the gorgeous photos from the singer/fitness guru's latest campaign as a Nike ambassador.
Instead of escaping the winter, these stars embrace it by heading for the mountains and hitting the fresh powder.
From Gisele Bundchen in handstand to Beyonce in wheel pose, see our favorite pics of fit celebs showing off their yoga skills.
Despite her busy schedule, the mom of two always hits the gym. Here's the exclusive workout that gets her toned in no time.
We got an exclusive look at some of the moves in celeb trainer Gunnar Peterson's latest workout challenge. Try the body-changing exercises for yourself!
Dance with Madonna, squat with Karlie and stretch with Brooke—if you're lucky enough to get in.