It’s always fascinating to see actors go to major lengths to portray certain roles, whether that means changing their hair or losing a lot of weight. But you know what we love to see the most? Male actors like Zac Efron and Taylor Lautner morphing into the Incredible Hulk!

Okay fine, that might be a bit of an exaggeration. But considering the amount of muscle they gained (we're talking 20 to 30 pounds here), it's safe to say that their transformations are simply mind-blowing. We can only imagine the hard work these guys went through to get super buff for their on-screen roles!

Click through the gallery to see which male actors went through shocking transformations for their films!

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