Chris Hemsworth has admitted that he was too big for his Thor costume.
The actor put himself through a vigorous regime in a bid to pile on the muscle for the action movie, in which he plays the title character.
But the actor reveals that he may have overdone it slightly when his costume began to cut off his circulation.
Speaking to the Los Angeles Times the actor said: "I got the part and immediately started looking at the comic books, and the guy is 500 pounds or something and looks like Schwarzenegger.
"And I thought, 'OK, I'm not gonna get to that'. But I have to get bigger.
"[The filmmakers] kept saying, 'Yeah, get as big as you can, as big as you can'. And then I came back right before Christmas, just before we started the movie, and had a final sort of camera test and put the costume on and within a couple of minutes, my hands started going numb.
"And everyone was like, 'Yeah, that's not cool'. And I started getting pins and needles and you'd touch the skin and the blood wouldn't return to that area so quick. And I thought, 'OK, it doesn't fit'."
Thor is the latest Marvel character to make it to the big screen - it's also the first major lead role for the actor.
He is set to reprise the role as part of The Avengers alongside Robert Downey Jr, Chris Evans and Mark Ruffalo.
Thor is released 27th April.
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