Actress reveals how she transformed her body to play Lara Croft in 'Tomb Raider'

Alicia Vikander tells "GMA" the details of her training regimen.

ByRachel Scott and Olivia Smith via GMA logo
March 22, 2018, 4:31 PM

Alicia Vikander spent four months of her life getting into fighting shape to play Lara Croft in “Tomb Raider.”

PHOTO: Alicia Vikander in a scene from "Tomb Raider" released by Warner Bros Pictures. It took weeks of training and plates full of protein to turn former ballerina Alicia Vikander into action star Lara Croft.
Alicia Vikander in a scene from "Tomb Raider" released by Warner Bros. Pictures. It took weeks of training and plates full of protein to turn former ballerina Alicia Vikander into action star Lara Croft.
Ilze Kitshoff/Warner Bros. Pictures via AP

Vikander, 29, said she gained about 10 to 12 pounds of muscle for her first turn as an action adventure star.

Alicia Vikander in a scene from "Tomb Raider" released by Warner Bros. Pictures. It took weeks of training and high protein diet to turn former ballerina Alicia Vikander into action star Lara Croft.
Ilze Kitshoff/Warner Bros. Pictures via AP

She worked out with a trainer and followed an intense diet that required her to eat every three hours.

Vikander reveals the hardest part of her eating plan and workouts in the video above. Watch for the full details of Vikander’s “Tomb Raider” training regimen.

Alicia Vikander arrives at the U.S. premiere of "Tomb Raider" at the TCL Chinese Theatre on March 12, 2018, in Los Angeles.
Jordan Strauss/AP

"Tomb Raider" is in theaters now.

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