Garrett Hedlund says filming the big screen adaptation of Jack Kerouac’s classic “On The Road” with Kristen Stewart was an unforgettable experience.

“It was wonderful,” he told Access Hollywood at the 2011 Young Hollywood Awards on Saturday.

“It was such an incredible rare journey that we all got to take, so I’m very proud of it. My anticipation is just as high as every body else’s about it,” he explained of the film, based on the legendary beat generation novel where “The Twilight Saga” star plays Marylou and Garret portrays Dean Moriarity.

“Kristen’s phenomenal,” the “Tron: Legacy” star continued. “She’s so focused, especially on this role… she’s so amazing and the world is going to get to really see that in this one.”

The 26-year-old actor is happy that the film will finally hit theaters after taking years to get off the ground.

“I singed on to the role like four years ago and so for the last four years I’ve just been twiddling thumbs trying to get the thing made, and hoping for it to be made and so it’s finally done,” he told Access.

“On The Road” — which also features Kirsten Dunst, Viggo Mortensen, Amy Adams, Elisabeth Moss, Steve Buscemi and Terrence Howard — is due for release on December 10, 2011.

Find out how one of these days’ most popular Hollywood males works out. Garrett Hedlund wasn’t always weighing 200 pounds. Today we are stepping into the virtual world, where everything is possible. The characters can be perfectly beautiful of unbelievably ugly, the places are either luxurious or dark and terrifying and everything in this world can be shaped up. Including the bodies. Some of us, when entering a virtual world (of a game or a social network) pretend to be better – taller, smarter, cleaner, richer and so on. But what happens when, even in the virtual word, you have to put yourself out there? You start working out. Garrett Hedlund – The cowboy turned action hero You can see Garrett Hedlund in his latest movie, Tron: Legacy. He is Sam, the son of a mastermind in cybernetics, who created a parallel universe similar to a video game and has been taken prisoner by his own creation. Sam was only a child when his father disappeared. As a grown up, he turned into a rebel. One day, though, he receives a sign that his father might not be gone after all. What’s interesting about Garrett Hedlund and this movie is the fact that when you see him act, he looks perfect: perfect muscle, perfect proportions, perfect overall look. For this look, he struggled a lot. When auditioning for the role he was much skinnier. So he had to workout a lot. Threatened by a skintight suit, he began his workout with a former Navy SEAL trainer, that tells Men’s Health how the workouts went: “Garrett didn’t repeat any workouts, which helped keep him engaged” he said. This was very important for both eliminating the routine as well as for getting in 9 weeks the results that normally show in 40 weeks. Garrett had the body tonus from his previous workout program which consisted in daily 2.2 miles jogging, followed by what he called “living-room prison workout”, where he followed the example of inmate workouts: pushups, sit-ups, squats, pull-ups and more. In order to gain more muscle, with the help of professional training he turned to a set of exercises with no break in between: bear crawls, tire drags and box jumps. In addition, he did overhead presses to gain strength in his shoulders. Garrett has always been attracted by sports. Growing up in Minnesota, on a farm, he developed a strong will of being put in the open and being fit. When in school, he had this idea that he wanted to be the best runner. So he started chasing cows. Whenever a cow would get scared of something and would run away from the herd, he would run as fast as he could to bring her back. This, as his first type of workout brought him the title of the best runner at his school. Source