Florence Pugh briefly thought she was “gonna die” every time she jumped off of the world’s second-tallest building for her new movie Thunderbolts.

For the opening sequence of the latest Marvel film, Pugh’s Yelena Belova sits on the edge of the Merdeka 118 skyscraper in Kuala Lumpur, Malaysia before walking off it.

Even though she knew she was in safe hands with the Marvel stunt team and all the harnesses and wires, her brain couldn’t help but think she might die every time she jumped off the building.

“The moment I jumped, every time, my brain went, ‘Oh, well, you f**ked it. You’re gonna die,'” she recalled in an interview with Who What Wear.

The Midsommar actress explained to the publication that she filmed the sequence over two days and did around nine jumps, after which she fell for about six metres (19.6ft) and dangled over the city in her harness.

She admitted that her body was pumping with so much adrenaline during those shoot days that she crashed out afterwards and slept for three hours in her room.

Pugh, who described the jump as “insane” and “mad”, insisted that she “loved” the experience, which she had actively begged Marvel bosses to let her do herself.

The British actress added that the scariest part of the stunt was realising she could do it.

“I could persuade myself to do that. I could fall down the mountain. I was like, ‘That’s not a good trick to have. Oops’… I can basically pretend to myself not to listen to my instincts,” she shared.

Thunderbolts is a new anti-hero team-up movie starring Pugh, Sebastian Stan, David Harbour, Wyatt Russell and Julia Louis-Dreyfus.

The film is now showing in U.K. cinemas.

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