• "Thor" star Chris Hemsworth is playing a shipwrecked sailor in period drama "In The Heart Of The Sea."

"Thor" star Chris Hemsworth is playing a shipwrecked sailor in period drama "In The Heart Of The Sea." (Photo : YouTube)

Chris Hemsworth seemingly had a horrible time filming "In The Heart Of The Sea" since the actor had to practically starve himself to fit in the role of a starved shipwreck survivor.

"This was physically and emotionally the hardest movie that I've been a part of," Hemsworth told the New York Daily News before further adding that he will never want to lose the weight so drastically again.

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The Australian actor dropped from 215 pounds to 175 pounds to play his part in the biographical adventure thriller which is based on the real life incident of sinking of the American whaling ship named Essex in 1820. To achieve his target, the actor had to cut down 500 calories a day for weeks while crew members gorged on cheeseburgers.

Director Ron Howard offered to try the strict dietary regimen with Hemsworth and other actors playing the crew members out of solidarity. However,  he could not continue the same for long and went back to his old eating habits.

Recalling one of such calorie-less diets, Benjamin Walker, the actor who plays the captain of the ill-fated voyage, claimed that one day they were given a dinner of "an oat cracker, bean sprouts, slice of tomato, and a slice of prosciutto," with pumpkin seeds on top as a garnish."

Although a team of  nutritionists, doctors and trainers used to be present on the sets to keep a tab on the actors' health, Tom Holland, who will soon be much better known as Marvel and Sony's new Spider-Man, did admit that on some days they were too tired to remember their lines.

Meanwhile, the publicity campaign of the movie bas been launched in New York by Howard, who admitedly has been obsessed with making a film about the power, the mystery and the savagery of the high seas for four decades.

"I've been fascinated by the drama of the sea and the way it tests people for a long time," the 61-year-old told Toronto Sun.