Kristen Stewart says that she loves acting so much that her regular bodily functions shut down when she's filming.
And Kristen says that she only "falls to pieces" once she wraps for the day such is her dedication to her work on the big screen.
"Oh my god, I f**king love it so much," the 22-year-old starlet said back in May while promoting her new movie On The Road.
"I'm like, bursting. I should be working . I don't want to take a break. It's funny on set, I don't have to go to the bathroom, I don't have anything wrong, I'm perfectly fine, so through-and-through.
"I'm not hungry. I'm literally not even in my own body. They wrap and they send me back to my trailer and I f**king fall to pieces. I suddenly realize that I've had to pee for six hours. And I'm starving."
Kristen stars as Dean Moriarty's 16-year-old wife Marylou in the movie adaptation of the Jack Kerouac novel.
The Twilight star also opened up about the emotional aspect of being an actress and why she likes living on the edge.
"I just really am trying, trying, all the time," Kristen said of perfecting her skills. "But I like to be scared. I love to suddenly feel out of control. Actors walk around wearing these little tool-belts of acting skills. And I just don't find that interesting to watch."
"I never want to see someone who clearly can cry at the drop of a hat. That's so uninteresting. And so many actresses are so f**king crazy. They're emotional wrecks, so they pretend to be these characters. But the emotions aren't coming from the right place. Do you know what I mean?"
Kristen's life has completely changed after pictures emerged on July 24 of her cavorting with the Snow White and the Huntsman director in public. She was photographed out and about for the first time this week after nearly a month of keeping a low profile.