Matt Damon is man who knows a thing or two about transforming his body for a role. In his early acting days he was almost skeletal when playing the creepy Tom Ripley in the 1999 movie The Talented Mr. Ripley (he was even more gaunt when he starred in Courage Under Fire in 1996). 

He’s also bulked up for a few roles – he had to beef up to play South African rugby player Francois Pienaar in Invictus – and he just got fat by reportedly binging on junk food to gain 30 pounds for his role as Mark Whitacre in The Informant!

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Damon’s latest body transformation is all muscle as he looks jacked in the teaser trailer for Jason Bourne due out later this year. Damon is teaming up with writer/director Paul Greengrass to reprise the role of the spy. He’s looking lean and mean, folks. Check it out: