Here’s a life tip: Never pick a fight with Olivia Munn. The actress recently showed off her incredible tae kwon do skills on Instagram and they are scary good.

Munn is training to play the female ninja Psylocke in next year’s “X-Men: Apocalypse.” She also displayed some wicked sword skills in another Instagram video, while her boyfriend Aaron Rodgers twirled his faux sword in the background.

The 35-year-old actress has spent most of the summer in Montreal filming the upcoming “X-Men” movie. Fans got their first look at Munn in her tight purple Psylocke costume on the cover of Entertainment Weekly last month alongside Oscar Issac as the villain En Sabah Nur a.k.a. Apocalypse and Michael Fassbender as Magneto.

The latex suit Munn wears in the film is so tight two women have to lube her body and the costume so she can slide into it. The first time putting on the suit, she “popped the crotch” and the latex broke, she told Conan O’Brien at San Diego Comic-Con.

“X-Men: Apocalypse” will premiere on May 27, 2016.

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A video posted by Olivia Munn (@oliviamunn) on Aug 1, 2015 at 11:15am PDT