Kate Winslet revealed she learned an incredible underwater 'superpower' for her role in the new Avatar: The Way Of Water.
The Titanic actress, who is no stranger to being in bodies of water for a long period of time in movies, learned how to hold her breath for a shocking number of minutes.
Speaking to Empire about her role as Ronal, a free diver of the Metkayina, the 46-year-old said she learned how to hold her breath in a 900,000-gallon water tank for longer than any other cast member.
"Seven minutes and 14 seconds, baby!" she told the publication.
"The most amazing thing for me as a middle-aged woman was to learn something not just new, but superhuman!"
She previously revealed she thought she died while filming underwater for seven whole minutes.
The actress said it was "wonderful" to be underwater for such a long period of time, she knew how dangerous it could be.
Kate also learned how to free-dive for her role in the film, the much-anticipated sequel to 2009's Avatar.
She told Observer Magazine earlier this year: "God, it's just wonderful. Your mind completely drifts off.
"You can't think about anything, you can't make lists in your head, you're just looking at the bubbles underneath you… My first words [when I resurfaced] were, ''Am I dead?' Yes, I thought I'd died."
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Kate learned how to free-dive with the help of her husband Ned, although she said that he struggled to spend as much time under the water as she could.
She said: "You have to have someone there. Ned trained with me and he got quite good at the breath-holding as well. But he did… black out."
Kate even broke a record previously held by Tom Cruise, who filmed underwater for six minutes for Mission: Impossible - Rogue Nation.
She once told ET: "It was brilliant and I was very proud of myself and I'll probably never be able to do it again.
"That came at the end of four weeks worth of quite intense training and it was in the dive tank, it was in the training tank. But I loved it."
Avatar: The Way Of Water is directed by James Cameron, who she worked with in 1997's Titanic.
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