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Whenever audiences see the choreographed routines within The Greatest Showman , it’ll look effortless. But because Zendaya said on The particular Tonight Show Mon, actually making the movie was not.

Zendaya plays acrobat Anne Wheeler in the movie, co-starring Rebecca Ferguson , Hugh Jackman and Michelle Williams . Zac Efron plays Anne’s love interest, stage actor Phillip Carlyle.

Before manufacturing began, director Eileen Gracey gave Zendaya advice. “He called and stated, ‘Listen, we’re going to workshop this just like a real Broadway production. ‘ I used to be like, ‘Cool! That’s great, ‘” she said. “Then he’s such as, ‘Also, you may want to start working away, because you have trapeze rehearsal if you get here, and I want to use the stop doubles as little as possible. ‘”

Zendaya began building the girl upper body strength, which she of course has “not maintained” since recording ended. “It was a lot of teaching. It was a lot of literally getting up generally there and just going for it, ” the lady recalled. “I had been rehearsing with this specific rig that I was utilized to. I had become normal with that elevation difference, and there was an internet. I felt good and comfy, and I had been doing it for a while. I used to be like, ‘OK, cool. I’m the trapeze artist! This is great! ‘”

Niko Tavernise/20th Century Fox

Nevertheless Zendaya showed up to set, it grew to become apparent that her training did not adequately prepare her. “The rig was 15 to 20 foot taller and there was no internet, because back in the day, they failed to have those yet. I was connected, so I’m safe, but visually— that’s a lot to get over, ” the girl said. “Right as I was going to increase in the cherry picker, Hugh Jackman walked by and he goes, ‘Zendaya, you’re a badass. ‘ I used to be like, ‘… Take me upward! Hugh Jackman called me a badass! ‘”

Efron “was such a great partner, ” the lady added. They had to “trust one another, ” because “he had to keep my weight and I had to keep him. It was a great icebreaker, do you know what I’m saying? ”

The actors filmed one of their own acrobatic musical numbers using 2 ropes— and no harnesses for assistance. They began together, swung aside and came back together. “We’re designed to grab onto each other with the some other arm and get in this swing, that is in all the posters and it’s beautiful— which is great, ” she explained. “But… if you don’t catch each other, [you’ll collide]. ”

Fallon simply so happened to have a clip of just one of their mishaps. After watching this, the actress joked, “And which is just one of the many that we could select from for that specific body slam! inch

The Greatest Showman is in theaters Dec. twenty.

(E! and NBC are both members of the NBCUniversal loved ones. )