Chris Hemsworth felt "moody" when he had to lose weight for 'In the Heart of the Sea'.
Chris Hemsworth
The 'Thor' star was reduced to a 500-calorie diet ahead of his portrayal of a man stranded at sea in the drama film and admits he found it really tough.
He told Good Morning America: "The gaining is fine, you just eat a lot and you lift weights but that was underfed, which led to a pretty moody existence and inconsistent emotions.
"You play all sorts of games - if I eat this maybe I don't eat that. The insanity is nuts. In order to do it justice, the story, we had to suffer in some way and we did. In other words, not a whole lot of acting was required. We were desperate."
Meanwhile, the 32-year-old actor - who dropped 33 lbs in four weeks for the role - previously admitted he felt like he was going to "pass out" whilst filming for the movie.
He shared: "We felt as if we were going to pass out any second. Looking back, it was essential [to lose the weight] to do the story justice. It was based on true events which inspired Moby Dick to be written. There wasn't a lot of acting required for those last couple of weeks."
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