Dakota Johnson wants to 'look good naked' for 'Fifty Shades' sex scenes

Dakota Johnson, who will play Anastasia Steele in the movie adaption of erotic novel 'Fifty Shades of Grey,' has revealed that she wants to "look good naked."

The 25-year-old actress, who didn't have much of an exercise regime before taking up the role, said that she totally understands now why people exercise, because it kind of f****** feels awesome, the daily Express reported.

The '21 Jump Street' star, who has been trying to hone an "athletic" figure with a mix of cardio and strengthening exercises, added that she thought beforehand that she would get in shape because mostly, like, it was kind of athletic shooting those scenes, foe which people weirdly need endurance.

The Texas-born actress continued that she also wanted Ana's body to look like that of a fairly active college student.

Johnson, who is the daughter of Melanie Griffith and Don Johnson, said that she and her co star Jamie Dornan worked out with a trainer and it was mostly maintaining the same level of energy and eating healthy.

Johnson's teacher Mari Winsor revealed that the actress has been coming into the studio since the middle of January almost every day, adding that pilates is changing her body, relieving her stress. It's a private place for her to come and do the work.