Scarlett Johansson, most fans know by now, was heavily pregnant while filming Avengers 2: Age Of Ultron, so in order to make some of her scenes look believable, she had to work with the director–Joss Whedon–to figure out the best way to get stunts done.

The actress says that while she was willing to get on a motorcycle for the movie, she obviously couldn’t do some of the amazing, gravity-defying moves that Black Widow is known for. To get around it, she filmed some scenes on a real bike and some on a stationary one…which admittedly, wasn’t as awesome, but got the job done.

“I don’t think you’re allowed to ride a motorcycle when you’re so pregnant, but I did. I did all of the motorcycle riding. I embarrassingly rode some sort of mechanical-bull type of motorcycle, which goes nowhere and doesn’t look cool, at all. But, I had some very professional and amazing motor-cross morphing done that makes Black Widow look like a total badass,” Johansson said.

Scarlett spoke recently about the role and said that one of the things she really likes about Black Widow is that she doesn’t really fall on one side or the other; she has a bit of good and a bit of bad in her, which made her easily relatable.

“In my first meeting with Joss, I had the chance to talk about Natasha’s backstory and her sordid past and I wanted to make sure that she stayed sort of gray, not really black or white. What’s exciting and compelling about the character is that she’s not Cap [Captain America]; she’s not righteous. She was in S.H.I.E.L.D. because it’s where she belonged, not necessarily that it was the right place to be. Now we find The Avengers in business as usual mode but it’s changing. So it’s my job to make sure that Natasha, through that change, stays true to the Natasha that I started with in The Avengers,” Scarlett Johansson said.