But it looks like they're passing down the tradition to their kids! Sons Maddox and Pax Jolie Pitt were spotted playing soccer at with some friends at the park.
Both boys looked like great athletes, but all of Maddox's martial arts training has gotten the little guy RIPPED!
He must be getting ready to kick some monster butt as Battling Boy!
If you couldn't see him as an action star before, there's no denying it now! They should start calling him Maddox Bruce-Lee Pitt!
[Image via FameFlynet Pictures.]