« All Photo Galleries Jake Gyllenhaal’s Body Transformations Through The Years

Jake Gyllenhaal Shirtless In 'Jarhead' (2005)

Jake Gyllenhaal transformed himself into Marine shape to play Anthony Swofford in Jarhead. The wartime drama was anything but lighthearted, but it did feature a lot of skin, abs and one scene even featured Gyllenhaal running around in a red thong and Santa hat.

Universal Pictures