But few actors have gone as far as to live on the streets to research their role.
That is what Singaporean director K. Rajagopal asked of the star of "A Yellow Bird", his film which touches on some of the wealthy city-state's most sensitive issues of race, migration and sex.
Rising television star Sivakumar Palakrishnan spent his weekends living rough on the streets of Singapore's "Little India", exploring a rarely seen side of one of Asia's most ordered societies.
"I made him go out and live and sleep in the streets because he doesn't come from that side of the tracks," director Rajagopal said.
"It was quite tough for him but he did it. I wanted a fresh response, for him to feel what it was really like to be homeless. That is why I like him so much as an actor, he's very open and intense."
The struggling ex-con Siva has to sleep on the kitchen floor with his mother because she has rented out the bedroom of her tiny apartment to mainland Chinese migrants.
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