if anyone's done sports in high school, then you've known kids who've done this in a year or so.
not to say i analyzed the movie scene for scene with my wife, while pausing in certain shirtless scenes, but in one scene he's standing next to that "bella" chick, and he's about as wide as her (meaning a 19 year old actress).
not a knock on him, he looked hot, but let's not forget, brad pitt was 155 lbs in fight club.