Jim Carrey hated dieting for his new movie. The 51-year-old actor shows off his svelte physique in The Incredible Burt Wonderstone, but admitted it was tough to get in shape to play street magician Steve Gray and he was thrilled to be able to cut back on exercising after filming ended and regain the weight he lost.

"It's not a happy place to be. I'm back now. I've got Mr. Cuddly back and we're happy. It's not a natural place to live in that kind of shape. It looks great. It's fantastic and gets a lot of attention, but you have to eat, like, antimatter to stay in that kind of shape," he said.

While Jim appears topless in the movie, he insisted it won't become a regular occurrence and joked, "I figured that was Matthew McConaughey's thing."

Jim is not the only star to undertake a tough diet for a role, Hugh Jackman has admitted he consumed "nothing but water" for 36 hours to prepare for Les Miserables.