Actress Charlize Theron realised how unfit she was on the set of the upcoming Alien prequel Prometheus after she was made to run for hours wearing a space suit.
The Oscar winner began wishing she'd given up her smoking habit and trained harder in the gym when director Sir Ridley Scott put her in heavy astronaut gear and filmed her jogging.
And Theron doubts whether there's any footage of her looking attractive during her gruelling sprint.
She explains, "I probably should have trained a little bit because I found myself in the middle of Iceland having to run with all this heavy gear on my back.
"It was (supposed to be) one take of sexy running and then it was all ugly running - Ridley going, 'Run! Run!' was pretty much the ugly running."