Amanda Peet was terrified she would vomit while making '012'.

The actress suffers from motion sickness and says she struggled to fight her feelings of nausea while filming certain scenes for the disaster movie.

She explained: "I can't go on thrill rides anymore because I get physically ill. But we filmed on sets where everything was bouncing around like a roller coaster. The worst was where we're supposed to nearly crash in a plane that was mounted on a gimbal. It gyrated so wildly that I got really nauseous.

"Every night I'd go home and be like, 'Am I still on the gimbal? Did I come down yet? Did I throw up?' "

The 37-year-old star also admitted she struggles to maintain a fitness regime because she foesn't believe it will help her in the long-term, and says she relies on special effects to look good on camera.

She added to "I have an inner conflict. I'll be at the gym and I'll start thinking, 'What am I doing? I'm going to sag no matter what I do.'

"I've certainly taken my clothes off on camera, but you have body make-up and special lighting.

"I mean, someone with a figure like Jennifer Aniston has a trainer, a cook spinning out some version of the latest diet, and probably a stop at the tanning salon. Then teenage girls go, 'God, I wish I could look like that.' Maybe they wouldn't if they knew what it took.'"