The 46 year old reveals he completely turned his life around so he would look the part of conman Scott Lang and his titular alter-ego in the new movie, but he admits it wreaked havoc on his social life.

He tells Britain's Cover Media, "I didn't do anything fun for a year. I ate no carbs or sugar, I worked out. I basically made health and fitness the focus of my day, for a long time.

"I would work out with a trainer; I worked with a guy who was teaching me tumbling, how to do flips, things like that. I was eating a lot of protein and vegetables, and I was eating at very specific times of the day. I didn't drink any alcohol. And I was miserable to be around for about a year."

However, Rudd confesses he soon learned to love his new healthy lifestyle.

He says, "Actually, I enjoyed having the focus. I knew I was going to have to be held accountable (for the film's success), so that made it a little easier. But I'd never done anything like that before, to that extreme, and having the majority of my day built around that instead of making fitness something I tried to work in on the side while I went about my day, was really kind of great.

"I woke up very early in the morning, I felt really good, I had lots of energy and it helped me also just get into the mind-set of this character. I figured if I'm in really good shape, I will feel like less of an imposter in the role."