The 28-year-old actress first came to fame on As the World Turns and All My Children, and had her breakout role as Karen Smith in 2004's Mean Girls. Seyfried's star has skyrocketed since, and she has recently appeared in such films as Mamma Mia!, Dear John, Les Misérables and Lovelace.
"I am most scared of being bored," the busy actress told W. "I was at a resort...and I thought, 'I should be loving this,' but I wasn't getting anything done, and that terrified me. When I feel like I'm not accomplishing anything, I feel like I failed the day."
Seyfried had spoken to the publication shortly after she returned from a rare vacation. She has worked nonstop in recent years, but enjoys acting and the perks that come with the job.
"Sex scenes are great," the actress said. "A lot of my costars have been sexy guys my age who are really respectful and cool. So, why not? I'm not going to pretend it's not fun."
The interview is not the first time Seyfried has dished about her intimate moments on film. The star had previously spoken to the same writer at W in a different interview, and said that she and Megan Fox "kissed really well together" during their steamy make-out session in 2009's Jennifer's Body. "We have similar kissing styles!" Seyfried said. "If I watch the scene, it's actually really sexy."
The actress will star in several upcoming movies, including Seth McFarlane's A Million Ways to Die in the West, and Noah Baumbach's While We're Young. Seyfried affirmed her commitment to film at the end of her interview with W.
"I'm at the mercy of my calling," the actress said of acting. "I'm addicted. Addicted and scared but never bored. I get to be other people all the time, and there's nothing dull about that."