Sexy action star Kate Beckinsale stars in one of summer's most anticipated films, "Total Recall." In the new issue of Women's Health, she talks about kicking Jessica Biel's butt on the big screen and what workouts she does in order to maintain her incredible body.

Beckinsale plays Colin Farrell's doting wife in the remake of the 1990 Arnold Scwarzenegger film, and one of the most talked-about scenes is her fight with Biel.  "It's not like a naked, porno, mud-wrestling-in-a-bar sort of fight, it's a real fight," she explained.

The actress is widely known for playing a vampire in the "Underworld" franchise. But fighting women on the big screen is different. "I did find that fighting a woman was very different from when I've fought men. There was a lot of 'I didn't hurt you, did I? Ooh, I'm sorry about that! No, it was my fault!'"

Beckinsale used to do intense workouts at the gym in order to keep her body fit. But now she's focusing on yoga-based routines. "I'd gotten particularly sick of being photographed outside a gym doing a squat with a medicine ball," she said.

One trainer, who used to be Schwarzengger's workout partner, was particularly brutal. She explained, "It was a full-on boys' gym: 'How much can you press? Go harder!' That kind of thing. They use to have a garbage can between the machines so people could throw up into it and then continue working out. That just seems far too gruesome. I didn't want to be in shape that much."

And believe it or not, Beckinsale avoided physical activity as a child: "I wasn't particularly athletic. No one ever thought, 'I must have Kate on my team.'" She added, "To me, you only went to the gym if you were really weird and obsessive. No one I knew in London at the time ever did it."

Well, she must be doing something right because she looks incredible at 38!