Chris Hemsworth put himself through the wringer for the epic film “In the Heart of the Sea.” The Australian actor completely transformed himself by putting himself on a strict diet with an intake of no more than 500 calories a day.
The Ron Howard film showed a scarily emaciated and disheveled Hemsworth. According to Entertainment Weekly, the actor said, that he and the actors were obsessively weighing themselves every day.
Robert Pattinson – Good Time
Robert Pattinson shot to international fame as Edward Cullen in the "Twilight" series, but he gained real respect as an actor when he played a thief in the film "Good Time." Pattinson went completely unnoticed when he started working at a car wash and took subways in New York City in order to prepare for the role.
He even moved into a basement apartment in Harlem. The actor never opened his curtains, barely changed their sheets, and wore and slept in the same clothes for months. It certainly shows on screen!
John Krasinski – 13 Hours
Who would have thought that Jim from "The Office" could blow us away in the super-charged drama film "13 Hours." The actor transformed into a super ripped special ops soldier in the 2012 film by undergoing an incredibly harsh training program created by a former Navy SEAL.
According to the actor, they learned how to shoot from a bunch of different weapons and maneuver through the dark. There were also tons of other strenuous activities. Sounds challenging!
Charlize Theron – Monster
When Charlize Theron was given the challenge of playing Aileen Wuornos in the 2003 film, Monster, she was in for quite a trip. Not only did she transform physically to the point that you couldn't even recognize her. Her skin was layered with a tattoo sink, her hair was thinned and she had dentures put in.
The beautiful actress even shaved her eyebrows. Of course, there was also the emotional distress of playing such a disturbed and tragic individual.
Demi Moore – GI Jane
When the gorgeous actress Demi Moore played the tough Jordon O’Neil in "GI Jane" the first thing she has to do was shave all of her hair off. Then came the exhausting training led by former Navy SEALS.
According to Moore, she claimed that she could have let a stuntwoman come and take over the more physical roles but she decided to them herself feeling that she would have missed out on an opportunity.