Scarlett Johansson.Photo: Amy Sussman/Getty Images

Becoming a superhero when shejoined the Marvel Cinematic Universe in 2010was a heroic effort forScarlett Johansson.
The 37-year-old actress, who was in her early twenties at the time, had to quickly build muscle and get in superhero shape, a major change for someone who wasn’t used to working out.
“That was a humongous moment for me because I was, I don’t know, 23 or 24 when I was cast inIron Man 2. I had never stepped foot in a gym, and I had five weeks to prepare myself for these huge stunt sequences,” JohanssontoldVanity Fairin a new interview.
Castas Natasha Romanoff, aka Black Widow, Johansson had to do a significant amount of stunt work.
“I was doing these huge choreographed sequences and I had no previous experience with any of that stuff. It was just a massive lifestyle change immediately upon getting cast,” she said.
Scarlett Johansson as Black Widow.Marvel/Paramount/Kobal/Shutterstock

The first step for Johansson was joining a gym, which was intimidating for a fitness newbie in body-obsessed Los Angeles — but she ultimately found a good trainer.
Now, Johansson said, exercise isa big part of her life.
“Fitness is such an important part of my mental wellness,” she said.
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Johansson, whowelcomed son Cosmowith husbandColin Jostin August,also talked about dealing with public scrutiny of her body during pregnancy. The added attention is part of why she kept that pregnancy, along with her pregnancy with 7-year-old daughterRose Dorothy, whom she shares with ex-husband Romain Dauriac, under wraps.
“I’ve been so protective of both pregnancies, not wanting to feel scrutinized in the public eye,” she said. “I wanted to be able to have my own feelings about my changing body without other people also telling me how they saw me, whether it was positive or negative.”
source: people.com