Chris Evans had a diet of ''bland chicken'' to develop Captain America's hunky physique.

The 32-year-old actor has been cast as the titular superhero in forthcoming film 'Captain America: The Winter Soldier' and was forced to do ''weight training'' and eat protein foods to build the image needed to depict his character.

He said: ''I'm a skinny guy naturally. My body wants to be about 170-180lbs, so to get it to 200lbs, I have to eat a lot. It's not so much what you're eating, it's the quantity. Aside form the weight training, which is brutal - although when you walk out of the gym you feel great - it's inbetween the workout that's tough, just eating, eating, eating. It sounds pleasant, but it's not pizza and doughnuts, it's just bland chicken. Very lean, dry, simple food that provides protein. You always feel bloated and uncomfortable.''

Evans reprised the role he first took on in 2011's 'Captain America: The First Avenger' for 'The Avengers' and 'Thor: The Dark World' before taking on the character again for 2014's film, and admits he doesn't continue to work out between movies.

He told UK's Glamour magazine: ''A week before we wrap, I stop working out. I literally just started again this week [for the second Avengers film], but these past few months have been so wonderful - not even thinking about the gym.''