Jake Gyllenhaal Takes PoP Role Seriously, And Half-Dressed

Jake Gyllenhaal stayed in character even after the cameras stopped rolling while filming Prince of Persia: The Sands of Time (out May 28).

"Jake would chat with crew and visitors in a British accent," a set source told Us Weekly. "It was funny to hear this American guy talking in an accent when he wasn't shooting. He took it very seriously."

Another thing the single stud took very seriously? Transforming his body with cardio and power circuits. "it's a very physical role," the actor admitted at the WonderCon comic book convention April 3.  Jake is also reported to have done most of his own stunts, proving that he is more than a pretty face.

The hard work paid off. "He was very proud of the way his body looked," says a source. "He was constantly shirtless."  Can you blame him?  Every picture leaked from the set of him, Jake had the sexy, sweaty glow.  He was hot as hell in more ways then one.  Too bad he didn't take to walking around in his Calvin Klein's.

The sad part about all of this is recently our poor Jake has been looking a little rough around the edges. Yeah, he has the I finally lost Reese glow, but something about him is off.  Maybe he is just panicking that he in going to turn 30 this year.