"The only thing I do when I'm pregnant is eat and sit on my butt!" Anderson told US Magazine.

Luckily for her, she doesn't have cravings too bad.

"I'm not really craving anything, but there's the lazy part of me that thinks, 'What's the point in working out until I have the baby?' Then we'll actually do something!" she said. "I know that's not necessarily the right way to look at it, but that's just me."

Anderson also told the periodical that she won't be working nearly as much in Hollywood in the next few years as she focuses on being a mom.

Anderson joins a new wave of older celebrities who are having kids. Anderson is 39. In her career she's won Emmy, Golden Globes, and SAG awards for her acting. she's most famous for her role on "X-Files."