Megan Fox is "not very passionate" about acting.
The 'Teenage Mutant Ninja Turtles' has never been "ambitious" when it comes to acting and doesn't see making movies as a "representation of my innermost being".
She said: "I know [that] idea is a very strange thing because usually actresses are all ambition, and are driven to achieve and they're workaholics, for the most part. And I've never been that way.
"I'm not necessarily very passionate about acting per se. I don't feel validated by being on a set or making a movie. I have a lot of fun making these movies, but it's not a representation of my innermost being."
And the 30-year-old actress - who has Noah, three, Bodhi, two and is expecting her third child with husband Brian Austin Green - also opened up about women stereotypes in Hollywood, admitting the options available to women can be "pretty scarce".
She added to the New York Times newspaper: "I don't get a whole lot of say in terms of character development on movies like these. It's not like I'm in there helping them write the script saying, 'April should do this, because this is what a real feminist would do.'
"In terms of what's available for women to play in general in Hollywood, it's pretty scarce. You have these stereotypes that still dominate films: the nag, the trophy, the escort. I haven't been sent a nag script yet, but I do get plenty of, like, 'interesting stripper'. Or, 'She's super funny, but she's also an escort, but that's what makes it funny!'"