Natalie Dormer has done her share of sex and nude scenes in "Game of Thrones" and "The Tudors," but while they can be a bit awkward, the 33-year-old actress is not lacking for body confidence.

In the December issue of Women's Health UK, Natalie Dormer said that she worked hard for her body by running and doing yoga, and that's why she's proud of showing it off.

But unlike other celebrities, she didn't hire a trainer.

"I place high demands on myself. After all, if you want to do something, do it properly, else what's the point?"

"Whichever city in the world I'm dropped in for shooting or promotion, I'll find somewhere close by," Natalie Dormer said of her need to do some yoga. "For me, I've had to shift around what I do over the years to find the nearest place."

On doing the raunchy scenes on "Game of Thrones," Natalie Dormer said that even if she has had her fair share, she can never be comfortable.

"Anyone who says they're laid-back about sex scenes is a fibber," she said. "It never gets any less... not traumatic, that's the wrong word, not embarrassing... it can be a bit awkward."

"The choreography of sex scenes is so unsexy and unglamorous, it's all about camera angles, you have to recreate the moment so many times. It's just timing and technical," the "Game of Thrones" star added.

But her need to run, do yoga, or any kind of exercise goes beyond being healthy as Natalie Dormer said that filming scenes for "Game of Thrones" can be physically taxing.

"When you have early calls, you don't necessarily want to eat first thing in the morning," she told Self magazine. "But you have such long days that if you don't, you really fall down from it. So, juicing before and eating later is, for me, a good nutritional compromise."