While filming Elysium, Matt Damon had to be in shape and that involved a strict diet and a special workout regime. Because of all that, he was very moody on the set.
He said: ”I was grumpy on this set, because I was on a diet for the whole movie. I think I shut up a little bit and keep to myself. It’s not even that it was as extreme as diets I’ve done before, but it’s like, at my age, I want to eat everything in my path, you know what I mean? I think I’ve become more of a glutton. It was really hard because I love to eat and I love to drink.”