May 17, 2016 04:06 PM

Eric Ray Davidson/Women's Health

Olivia Munn got into fighting shape for her role as Psylocke in X-Men: Apocalypse – which was no easy task.

“I started working out every single day,” the actress, 35, said in the June issue of Women’s Health.

RELATED: PEOPLE REVIEW: X-Men: Apocalypse – It’s the End of the World as We Know It and We Feel Meh

As part of her training, Munn began doing taekwondo again, a sport she grew up with and even earned a black belt in.

Eric Ray Davidson/Women's Health

She told the magazine getting back into martial arts – and even learning how to fight with a sword – was “really empowering.”

Munn also revamped her eating habits while prepping to play her X-Men character.

“I started getting into eating 20-80, where 80 percent of your diet is fruits and vegetables, and 20 percent is whatever,” she explained.

RELATED: Olivia Munn Reveals How She ‘Unintentionally’ Lost 12 Pounds Preparing for Her Role in X-Men: Apocalypse

Munn revealed earlier this month that her disciplined diet and exercise routine led her to drop 12 lbs. – but losing weight was never her end goal.

Eric Ray Davidson/Women's Health

“My intention was to just get as fit and as healthy as I could be, for myself,” said Munn. “By the time I was finished [filming], I was 12 pounds less than I started!”

Gabrielle Olya, @GabyOlya

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