LOS ANGELES - JUL 21:  Chris Pratt at the "Guardians Of The GalaAfter emerging from near obscurity, Chris Pratt has become one of the biggest movie stars in the world. With his good looks, great comedic timing and bulging biceps, he has firmly established his presence as an action hero. After years of playing the chubby, lovable character, Andy Dwyer on Parks and Recreation, he had to slim down for other roles and he got an idea of what a life of obesity was truly costing him.

It’s not uncommon for actors and actresses to lose and gain weight for specific projects and Pratt wasn’t any different until, one day, he realized that something wasn’t right. In a recent interview for Men’s Health UK, he explained: “I’d gone back and forth, lost weight for Moneyball, got fat again, then trimmed down for Zero Dark Thirty, then gained it all back again for Andy. That’s when I saw Zero Dark Thirty and right after walking out I was like: ‘I’m going to get in shape and I’m never going to be fat again.'”

Impotence, Depression

Pratt further elaborated about what being overweight had cost him. “I was impotent, fatigued, emotionally depressed,” he admits. “I had real health issues that were affecting me in a major way. It’s bad for your heart, your skin, your system, your spirit.”

It’s hard to believe that he’s the same man who weighed 300 pounds two years ago and was known for eating three to four hamburgers every time the cast did a table read for Parks and Rec. While he was reviewing some scenes from the show, he had another epiphany: “I saw myself in an episode and in the matter of two moments very close together, I thought, ‘Oh my God, I’m getting fat’ and then almost immediately I did something else and I thought, ‘Holy crap, I’ve never seen myself funnier.’ And I put the two together.”

Clearly, he’s found a way to be both healthy and hilarious because he led Guardians of the Galaxy to box-office gold for exactly those two reasons – he was funny and he was in shape enough to make us believe he was really man of action, Peter Quill, otherwise known as Star-Lord.

Bad Habits

The 35-year-old is married to and shares a son with Mom star, Anna Faris, and shares how things spiraled out of control: “We were drinking a lot of wine and having fun. I was her little Hansel out in the woods and she was fattening me up to put me in the fire. It was like Momma Bear and Papa Bear. She would eat a little bit, I would eat all of mine and the rest of hers.”

That could sound like anyone’s story and it’s incredibly relatable. Many of us fall into patterns when we get married and too comfortable. Before long, some of those habits can take their toll on our physical and emotional health and our relationships. Pratt got things under control by committing to regular exercise and huge change to his diet.

Chris Pratt toned up physique can be seen in Jurassic World which hits theaters on June 12, 2015.