The couple that plays together, stays together, and the same seems to be true for these celebrity duos who work out together. Keeping fit is a high priority in Hollywood, and these celebrities definitely know how to go from significant other to workout buddy. Take a look at these couples that love to sweat as a pair, whether it's at the gym, on the hills, or on the road! Sources: INFDaily.com and Read more

Jake Gyllenhaal wore a tank and short shorts for a run in the Hollywood Hills with Michael Peña yesterday. The buff buddies are costars in End of Watch, and they'll soon welcome a new member to the cast since Anna Kendrick just landed the role of Jake's onscreen wife. Jake and Michael have already been spotted in uniform on set, and it appears that they're continuing to work on their physiques Read more

Jake Gyllenhaal was spotted making his way into a salon in Studio City, CA, yesterday. The actor is still sporting the relatively close-shaved haircut he got to work on End of Watch. Despite his shooting schedule, Jake has been spending lots of time off at low-key lunches, workouts, and errands. He also made a quick trip east recently. Jake was spotted flirting with a brunette out at a Brooklyn Read more

Whether it's heading to the gym for a kickboxing class, or taking to the streets for a five-mile run, having a friend, a loved one, or even a personal trainer join you in your efforts makes all the difference. It not only turns your workout into a social affair, but you have someone there who is sweating it out with you, and they can also give you a motivational pep talk when you're experiencing Read more

Cameron Diaz hit CinemaCon in Las Vegas yesterday to show off her movie Bad Teacher, and she stuck around last night for a special ceremony hosted by her good friend and Charlie's Angels costar Drew Barrymore. Drew, who took off from LA yesterday with her PDA buddy Will Kopelman, was on hand to present Cameron with the Female Star of the Year Award. Cameron went on stage to accept with a hug for Read more

Miranda Kerr and Heidi Klum teamed up in NYC on Saturday to take a morning run. The jog was one of the many Heidi's doing as part of her Summer Run series, which is designed to encourage other women to team up with friends and focus on fitness. Heidi Klum's new website is the place where she keeps track of her miles, and post-workout with Miranda she posted a photo and wrote, "Running with Read more