Megan Fox shot her scenes for 'Jonah Hex' in five days.

The 24-year-old star - who plays love interest Lilah in the western movie - only spent five days on the set of the film and confesses it was one of the hardest she has worked on.

She said: "It's the toughest movie I've ever done.

"The stunts and the make-up... a lot of pain... f**king horrible. I don't know if I'd do it again. I only worked on this for five days in Louisiana. And we would shoot all day. So we worked really hard for those five days, and then they wrapped me."

However, the screen beauty did admit she has worked on more "difficult" projects in the past.

She told MTV News: "It was an intense process, to cram all of that into such a short amount of time. It was difficult. It's not the most difficult thing I've done or survived."

Megan recently confessed she had problems on the set of the movie as her small hands prevented her from being able to hold a gun correctly.

She said: "Actually there was one gunfight scene that the stunt team had been choreographing for, I think, a couple of weeks, and I showed up and I had a minute to get it down and rehearse it and it was really difficult for me to shoot the old-style gunslinger guns because I have tiny little baby hands.

"The guns are really large and really heavy, so just the physicality of actually having to pull that off was really difficult. This was more action-heavy for me."