Christian Bale has become famed for his radical transformations over the years, with his dedication to the craft of acting seemingly knowing no bounds. We've seen this from Bale time and time again, from the 2004 psychological thriller The Machinist where he resembled a walking corpse to ballooning up to portray Vice President Dick Cheney in Vice.
But with death recently staring him in the face, one of Hollywood's most famous method actors has finally had enough.
In an interview with the Sunday Times, Bale said, "I can't keep doing it. I really can't. My mortality is staring me in the face."
The British actor also admitted that he questioned his extreme ways when he discovered that Gary Oldman hadn't put on any weight to play Winston Churchill in The Darkest Hour, a role which landed him with the gong for Best Actor at last year's Academy Awards.
"By this time I'm 20lb in," said Bale, who is expected to take home the Leading Actor gong on February 24. "I said, 'Wait - none?' I felt like such a tit, but I thought, 'I'm on this road; I'm going to keep going.'"
But one person who seemingly has no problem with Bale's weight gain is his son. "My son loved the tummy. He would just bounce up and down on that a lot and headbutt it and bounce off it and fall to the floor," he gleefully recalled.
In a past interview with the Guardian, the American Psycho star revealed the spiritual effects his rapid weight loss had on him when he was filming The Machinist. "It's an amazing experience doing that. When you're so skinny that you can hardly walk up a flight of stairs... you're, like, this being of pure thought. It's like you've abandoned your body.
"That's the most Zen-like state I've ever been in my life. Two hours' sleep, reading a book for 10 hours straight without stopping ... unbelievable. You couldn't rile me up. No rollercoaster of emotions.
"As soon as you start putting the food back in your stomach, the rollercoaster comes back."
Remarkably, Bale then had only six months to bulk up and undergo a series of grueling gym exercises for his role in Batman Begins.
Christian Bale may be many things, but one thing he's certainly not is an uncommitted actor.