Mark Wahlberg is famous for throwing himself into his roles. However, he now regrets doing just that for his latest movie. When Wahlberg was expected to pack on the pounds for his latest role, he accepted the challenge with passion and began chowing down on an eleven-thousand calorie diet that quickly helped him gain weight for his new movie. Over the course of just three weeks, Wahlberg allegedly put on at least twenty pounds because he wanted to look the part in his movie depicting a real-life boxer who changed paths to become a priest.

Back in April, Wahlberg practically bragged about the new challenge that would help him gain a lot of weight very fast when he was talking to late-night host Jimmy Kimmel about the opportunity. He was expected to be on set for the movie for thirty days and had to gain a lot of weight during that period of time. Although he was eager to throw on the pounds for the movie, Stu, he soon learned that he might have bitten off more than he could chew.

“They want me to do it as healthy as possible,” the actor told Kimmel. “I’m like, ‘Dude, I’ve been on such a regimen for so long, I just want to eat everything in sight.’ I want to go to bakeries, I want to go to Denny’s, I want to get pancakes. I want to get everything that I could possibly get my hands on.”

Now, Wahlberg is complaining about gaining so much weight because it will not be as easy to shed the poundage now that it is stacked onto his stomach. During the course of the movie, Wahlberg packed on about twenty pounds during just three weeks of time.

When Wahlberg appeared on The Tonight Show with Jimmy Fallon on Thursday, he didn’t seem as excited about the changes to his body. He seemed to regret packing on the pounds for the movie because they were going to be hard for him to shed now that he has reached the age of fifty.

“Unfortunately, I had to consume, for two weeks, 7,000 calories, and then for another two weeks, 11,000 calories,” the star shared. “And it was fun for about an hour. It’s such a hard, physical thing to do. Losing weight, you just kind of tough it out—you just don’t eat and exercise. And this, even when you’re full, I would wake up after a meal and have another meal. I was eating every three hours. It was not fun.”

Jimmy Fallon cleverly pointed out that Wahlberg recently turned fifty. He wanted to know if it was going to be harder to quickly gain and lose weight now that Wahlberg was officially over the hill.

“Yeah, absolutely,” the Oscar nominee replied. “Once the metabolism starts to slow down, it gets really difficult. I was trying to get this movie made for six years, we only had 30 days to shoot it, and so I wanted to really make it happen.”

He added, “And [I] was also crazy to have financed a lot of it myself. So I knew I was on a ticking clock on my own dime, and you get things done pretty quickly when that’s the case.”

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