The producers of the film claim that Christian Bale dropped from about 173 pounds (78,4kg) in weight down to about 110 pounds (49,8kg) in weight to make this film. They also claim that Bale actually wanted to drop down to 100 pounds, but that they would not let him go below 120 out of fear that his health could be in too much danger if he did. His diet consisted of one can of tuna and an apple per day. His 63-pound (28,5kg) weight loss is said to be a record for any actor for a movie role.
He regained the weight in time for his role in Batman Begins (2005).
The Fighter (2010)
Christian Bale spent hours of time with the real Dicky Eklund to learn how to emulate him properly. He had to lose 30 pounds (13.6kg) of weight because Eklund was a crack addict at the time.
The Pianist (2002)
Adrien Brody lost 14 kg (31lb) for the role of Wladyslaw Szpilman by eating a daily diet of two boiled eggs and green tea for breakfast, a little chicken for lunch, and a small piece of fish or chicken with steamed vegetables for dinner over a six week period. Initially his weight was 73 kg (161lb).
Things Fall Apart (2011)
The 34-year-old actor plays a football player diagnosed with cancer. 50 Cent dropped from 214 pounds (97kg) to an astonishing 160 (72,5kg) with a liquid diet and three-hour-a-day treadmill walks for nine weeks. "Wow! I was starving," he admitted.
The Informant! (2009)
To prepare for the role of the overweight character Mark Whitacre, Matt Damon gained over 30 pounds (13,6kg) prior to filming. He did this by eating lots of hamburgers, pizza, and dark beer, which he described in an interview as being "really, really, really fun". He dieted the weight off as soon as the shoot was complete.
Courage Under Fire (1996)
Matt Damon lost 40 pounds (18,1kg) for his role in the movie. thanks ♥ CHANi
The Talented Mr. Ripley (1999)
Damon lost 30 pounds (13,6kg) for his role in the movie.
After a notable weight gain for Stuck on You (2003), he lost 22 pounds (9.9kg) training for The Bourne Supremacy (2004), eventually having six-pack abs.
Fear and Loathing in Las Vegas (1998)
Benicio Del Toro gained 40 pounds (18,1kg) for his role as Dr. Gonzo and, in the commentary during the Criterion Collection version of the DVD, says to have done so by eating multiple donuts every day.
Full Metal Jacket (1987)
Vincent D'Onofrio gained 70 pounds (31,7kg) for his role as Pvt. Pyle, breaking Robert De Niro's movie weight-gain record (60 pounds) for Raging Bull (1980). It took him seven months to put the weight on and nine months to take it off with physical training.
To prepare for his role, Colin Farrell shed 44 pounds (19,9kg) to achieve a skeletal-like thin appearance that surprised both reporters and close friends. To obtain this look, he reportedly lived on black coffee, Diet Coke, and tuna.
The Lovely Bones (2009)
Mark Wahlberg replaced Ryan Gosling just days before shooting began. In preparation for the role, Gosling had gained 20 pounds (9kg) and grew out a beard. However, he vacated the role due to creative differences. Wahlberg, who had just completed shooting The Happening (2008), another production in Pennsylvania, became available just in time to accept Gosling's role.
INFO: I found so many stories about his weight gain it's hard to determine which one is most accurate but it is clear he did gain weight quite a bit at that time. Also the amount of pounds gained is not sure, as I read somewhere it was 60 lbs (that is about 27kg) which I find hard to believe but cannot be sure. I trust imdb more than gossip magazines.
Cast Away (2000)
To make himself look like an average out of shape middle aged man Tom Hanks didn't exercise and allowed himself to grow pudgy. Production was then halted for a year so he could lose fifty pounds (22.6kg) and grow out his hair for his time spent on the deserted island.
Tom Hanks lost 26 pounds (11,7kg) during his role for this film.
A League of Their Own (1992)
Tom Hanks gained 30 pounds (13,6kg) in preparation for his role. He attributed the weight he gained to a nearby Dairy Queen.
Garrett Hedlund gained 30 lbs. (13,6kg) of muscle for his role as Patroclus.
Friday Night Lights (2004)
Garrett Hedlund gained an about additional 20 lbs (9,0kg) for this movie on top of the 30 lbs that he had gained for Troy (2004). He was up to 200 lbs(90,7kg) when he'd usually been 155 (70,3kg).
Four Brothers (2005)
Hedlund had to slim back down for the role of Jack Mercer in Four Brothers.
Death Sentence (2007)
BN: "you look like you went through a lot of physical changes for the part, too. You look a lot bigger on screen."
GH: "I gained about 30 pounds (13,6kg) for the role. I spent a lot of time in the gym, which I really didn’t like, so as we got closer to the film, I would use that anger I had about working out as part of the character. I wouldn’t go to the gym, but I’d tear up the set." thanks missasian
21 Jump Street (2012)
The 27-year-old is estimated to have lost close to 40 lbs. (18,1kg) since last December, according to the Daily Mail.
Hill, who lost the weight through diet and exercise, started his weight loss earlier this year because he 'thought it was important to be healthier,' he told the Los Angeles Times.
'It's not fun,' he said of his efforts. 'I wouldn't say it's the most fun endeavor I've ever took on in my life—but its important. And I'm enjoying it. If I eat something unhealthy now, I kind of feel a little weird and my body hurts.'
Besides striving to get healthier, Hill may have shed the weight for his new role in the upcoming film '21 Jump Street,' co-starring Channing Tatum.
Jennifer Hudson has been sticking to a weight loss program that has brought her 56 pounds (25,4kg) lighter. Jennifer revealed she shed the pounds to play South Africa’s Winnie Mandela for the upcoming film Winnie.
Jennifer Hudson gained twenty pounds (9,0kg) to play the role of Effie White.
To play the super-svelte Deena Jones - modeled on naturally thin Diana Ross – for the film "Dreamgirls," Knowles lost 20 pounds (9,0kg), an idea that, she told reporters at the Cannes Film Festival premiere, was her own.
"At the beginning [of filming], I was my normal weight," she said. "I actually gained a little bit, but then I lost 20 pounds when I went from young Deena to old Deena. I wanted it to be something more than just make-up and hair. I wanted to see the change."
New Moon (2009)
After months of speculation and rumors, director Chris Weitz and the novel's author, Stephenie Meyer, confirmed on her official website that Taylor Lautner would be reprising his role as Jacob Black. It was doubted as the filmmakers feared he would not be able to become fit enough in time. However, he was given the go-ahead after gaining 26 pounds (11,7kg) of muscle. thanks jllvalentine
To play the skinny heroin-addicted Renton, Ewan McGregor was placed on a simple diet consisting of no alcohol or dairy products in order to lose weight. It only took him two months to reach Renton's desired size.
American History X (1998)
To portray a skinhead in the movie "American History X," Norton put on 35 pounds (15,8kg) of muscle on his normally slender frame.
He has said he upped his protein intake to gain muscle. In an interview with Total Film, he said he spent about two and a half months getting into shape because he felt the character called for it.
"I think he's a character who's armored himself against the pain he's experienced in his life with his rage," he said. "I wanted him to have physically manifested that sort of armoring as well. When you talk to those kids, that's what those tattoos and muscles are all about. In a lot of ways, it's about creating a shield or a psychic empowerment device to deal with the feeling of being marginal and insecure."
Cop Land (1997)
Stallone gained 40 pounds (18,1kg) to add realism to his portrayal of the police officer. He also was only paid SAG minimum wages. By the time that reshoots were required, he had lost the weight again. thanks Todd Hageman
Million Dollar Baby (2004)
Although she was naturally athletic from high school, she totally changed physically to play Maggie in Million Dollar Baby (2004). She gained nearly 20 pounds (9,0kg) of muscle due to the workouts, becoming so buff that her former clothes are still too small for her.