Paul Rudd nixed alcohol, carbs for ‘Ant-Man,’ jokes it’s the Chris Pratt regimen

Paul Rudd gave up alcohol and carbs to tone his body as “Ant-Man’s” Scott Lang, which apparently is pretty hard for a guy who says he has a pub in his basement.

The now-toned “Clueless” star — who went the way of his “Parks and Recreation” costar Chris Pratt and physically transformed for the role — gives audiences a gratifying peek at his buff physique in the caper. (Hello, washboard abs!)

Rudd, 46, who also co-wrote the film’s screenplay, told People that he had never exercised that diligently for an extended period of time, but it was much easier to stick with the routine than he thought.

PHOTOS: ‘Ant-Man’ world premiere

“Everything else about my day kind of had to fit in around the workouts. I was going to be held accountable for it, and there was a reason for doing it,” he told the mag. “I wasn’t just randomly doing this kind of arbitrarily, which would have made it a lot harder.”

The “This is 40” alum nixed alcohol and carbs for a year and did lots of “flips and rolls” in his gymnastics-style workouts. He also quipped that he took a page out of “Guardians of the Galaxy” star Chris Pratt’s manual on how to bulk up to play a superhero — even though Ant-Man gets his strength when he shrinks down.

“I basically didn’t eat anything for about a year,” Rudd told Variety. “I took the Chris Pratt approach to training for an action movie: Eliminate anything fun for a year, and then you can play a hero.”

Marvel’s “Ant-Man,” which also stars Michael Douglas, Evangeline Lilly, Corey Stoll and Michael Pena, hits theaters Friday. Read The Times’ review here.

Follow me on Twitter @NardineSaad.