Juno star Michael Cera has revealed he got back to basics on the set of his latest movie.
Speaking at the Los Angeles Film Festival at the premiere of Crystal Fairy, Michael said taking on the role of a boorish, insensitive twentysomething backpacking round Chile was a lot of fun
"We were just travelling around for two weeks having this fun adventure, we shot it chronologically so the voyage you see in the movie is what we experienced.
"We were living on bread and water and laughing every night, hanging out. It was a great time for everyone."
The movie sees Michael's character engage in a battle of wills with an eccentric traveller called the Crystal Fairy on a road trip to find a hallucinogenic cactus.
The 25-year-old said the friction of the scenes was all part of the enjoyment.
"Scenes that are tense are a lot of fun, it's fun to be incompatible with people, everyone relates to it."
The Canadian actor is currently riding high in the American box office with the success of disaster comedy This Is The End, co-written and directed by his friend Seth Rogen and starring Seth, James Franco, Jonah Hill, Emma Watson and Rihanna as themselves.
"I was there for two days hanging out with friends and laughing. It was not like a job just sitting around making your friends laugh, it was a nice way to work.
"I went to a casino and lost money and there a giant cockroach in my hotel room even though I was on the 20th floor. That's all I remembers about it, the rest was a blur."