June 3, 2015 7:37 AM EDT

Doing movie stunts isn’t easy, and neither is walking on a slick marble floor. Melissa McCarthy had to do both during the making of her new movie, Spy, and she talked last night on Late Night With Seth Myers about the bruises and pain she incurred.

At one point, McCarthy put out her back on the way to getting a massage, and nearly put the shooting of the movie in jeopardy. No pain, no gain, and no nicks, no flicks, as they say.

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