Having already bulked up once for 2005 's Jarhead, Jake Gyllenhaal has apparently hit the weights again for Disney's upcoming Prince of Persia film. Celebrity-celebrating site JustJared.com has posted pictures of Gyllenhaal in Morocco on the set of the film, and the actor has matched--if not surpassed--the buff body reshaping he underwent to transform from his usual lean nerd form (as seen in Bubble Boy and Zodiac) to his marine character in Jarhead.

　　According to JustJared, the actor is in the North African nation taking in the sights with girlfriend Reese Witherspoon (who apparently did not have to radically reshape her body to get a role in an upcoming romantic comedy with Vince Vaughn). Although the candid pics aren't from scenes in the film, they do show Gyllenhaal in his costume (or lack thereof) for the role of Prince Dastan for the first time.

　　The Prince of Persia will also star Gemma Arterton ( Quantum of Solace, Three and Out), Ben Kingsley (Sexy Beast , BloodRayne), and Alfred Molina (Raiders of the Lost Ark, Spider-Man 2). As Dastan, Gyllenhaal will attempt to prevent a nefarious nobleman from obtaining the continuum-controlling Sands of Time. Arterton's character, the princess Tamina, will join him on his quest.

　　Filming began late last month and will move to London by the project's end. The Prince of Persia is currently set for release Memorial Day weekend of 2010.