hollywood Gyllenhaal beard west hollywood sweat Jake Gyllenhaal was spotted leaving Wing Chun Kung-Fu studio Friday afternoon.

With the success of Jaden Smith's Karate Kid flick, think Gyllenhaal wants in on the sure-to-be sequel?

The Prince of Persia has certainly been known to buff up for a role. Perhaps he's just training for a new action flick -- or maybe for his next run-in with Reese's ex?