Celebrity Fitness Fanatics

By Dana Flax

Jake Gyllenhaal represents for his bro-dawg Lance Armstrong during a run in Santa Monica, Calif.

Badass biker Russell Crowe shows Sydney who truly wins the title of Lance Oz-strong.

Adrian Grenier works his yams on the beach in Miami, putting the unlimited Totally '80s Step Aerobics package he bought at the gym to good use.

Scrunchy advocate Kate Beckinsale poses for the paps on a power walk in L.A. Looking stately burns calories, right?

Ryan Seacrest seemingly floats through his jog in L.A. You see, rich people just don't *do* dirty shoes.

Portrait of well-being Amy Winehouse trains for her future Olympics gymnastics tryouts. When pressed for comment, Shawn Johnson cried and ran away.

Spencer Pratt works out on the beach with his best friend, also known as the guy who he pays by the hour to make him lift heavy things.

After a run on a Brazilian beach, topless wonder Matthew McConaughey looks puzzled by the hole-filled piece of fabric most people interpret to be a shirt.

Succeeding mainly in outfit coordination, Jesse Metcalfe lets down white men everywhere who hope to defeat the "can't jump" stereotype.

Ashton Kutcher takes a break from working out so that he may find inspiration for his next Tweet.

Mario Lopez powers through epic headband headache in order to maintain the meatiness of his trademark guns.

Aspiring Pixy Stick Jennifer Connelly ambles cautiously through the streets. Seriously, that looks like about all she can handle right now.

Hugh Grant looks suspiciously over his shoulder at photographers snapping pictures of him on a jog. We'd be self-conscious, too, if we ran like a fancy British lady (see "Mickey Blue Eyes").

While Gwen Stefani brings home the bacon, Gavin Rossdale exemplifies a life of leisure during a tennis match. Unclear whether Monica Seles-like grunts were emitted.

Precious pair Liev Schreiber and Naomi Watts play to the camera while on a jog in NYC. Aw, we love you, too, guys.

Silver fox Tony Danza shows us who's the boss of the latest men's softball fashions.

Hot dad Ed Burns grips his iPod on a workout in New York City. Someone get this man an armband, stat! We'll take one for the team if it means we can touch his bicep.

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