Stars WorkingOut It's Not Magic!

We're quickly approaching swimsuit season, which means the stars are getting in (even better than usual) shape! Now, we know that you know your celebs, so we want to put that knowledge to the test. Click ahead to see if you can identify these sweaty stars solely by their bulging biceps, toned gams, and favorite workout activities!

This Aussie hottie has a fierce on-screen alter ego that he has to bulk up for. Do you recognize the swollen muscles and popping veins of this gym rat?