Speaking about Cillian Murphy's weight loss for 'Oppenheimer', co-star Emily Blunt said, "He had such a monumental undertaking. And he could only eat, like, an almond every day," she said. "We invited Cillian to dinner every night...and he never went," said Matt Damon, with Blunt adding that Murphy instead ate "one almond most nights or a little slice of apple".