He earlier disclosed that he lost 1 pound by modifying his diet and adding exercise to his routine. The actor engaged a personal trainer, who assisted him in joining a gym and beginning to work out on a daily basis. Bonneville began working out more regularly after the release of his movie The Grey. He told the Telegraph, "I did one round of the world's toughest marathon, the Vancouver Olympic Marathon, just for fun. It was a bit crazy but I enjoyed it." Since then, he has been following a strict diet full of vegetables and fish to get back into shape for another role. He said, "I'm really looking forward to playing King Charles II. It should be fun! But yes, I want to get back into shape first though." Bonneville started gaining attention for his work before the release of each new film. He became more famous after playing George Clooney's dad in Up in the Air and Spider-Man's uncle in Sam Raimi's series of movies. However, his career started to fade when he appeared as Henry VIII in the movie Anne of Green Gables: A New Beginning. Critics were not happy with this interpretation and Bonneville received negative reviews for his performance.