Jamie Luner's Cellular Theory

If Profiler star Jamie Luner looks different these days, chances are it's because her body's regenerating.

We're still not sure that we follow all of this, but Luner insists that the human body ? in concert with Saturn's orbit ? somehow regenerates new cells every seven years.

"And every seven years, when this happens, there's usually a major transformation," says the 28-year-old actress. "This was my largest year ? most change, biggest growth, overwhelming, highest ups, highest downs, wild. It was an E-ticket ride."

Luner, who celebrates her 29th birthday May 12, says her starring role on NBC's Profiler has made her grow up very fast and made her much stronger in terms of who she is and what she wants.

"I'm getting to know myself," says Luner, who recently split with her boyfriend after nearly five years of romance. "I focused this year on nothing but my craft. I've dealt with a lot of producers and executives, speaking up for what I need and what I want. I never did that before.

"If you would just spend more time doing the things that you know you should be doing for yourself ? whether that be going on a trip or working out or spa-ing it or shopping or making dinners ? you become a happy, full person, and people are attracted to it, and things come to it," she says.