The governor has battled a weight problem for many years and often jokes about his struggles. At a news briefing last month, when asked about Twinkies maker Hostess shutting down, he went on a riff about not taking the bait. "This is a setup!" he jokingly exclaimed.
When Walters started the discussion by telling Christie he is a "little overweight," he responded: "More than a little."
Asked why, he answered: "If I could figure that out, I'd fix it."
The governor was also asked about his weight during an interview with Oprah Winfrey in January, and how he deals with people joking about him being fat. He said he had developed "a shell about it."
He has said he hired a personal trainer about a year ago.