MONIQUE SCUDERI HAD ALWAYS thought of yoga as an off-limits activity. "The natural expression of my faith is to use Christ as my center in anything I do," says the 28-year-old massage therapist. No hosannas? No asanas.

But a few weeks ago, she found herself attempting the triangle pose for the first time as teacher Alice Sevivas exhorted her students to think about the Holy Trinity.

To Sevivas, owner of My Body Yoga Spa (309 Mill St., Occoquan; 703-494-YOGA; mybodyogaspa.com), the connection between yoga and her Christian faith are obvious. "There's so much scripture that talks about honoring your body," she explains.

Although Sevivas uses traditional yoga moves in the monthly Mbodyoga class, she weaves in religious imagery. Doing reverse table top? You're seated at a table eating "soul food" with the Lord. Unable to let go of work worries?

Sevivas reminds everyone that "Psalms 46:10 teaches us to find that quiet space so we can communicate and listen." Payment is by donation, with the proceeds going to charitable causes (last month, it was breast cancer research).

Sevivas is part of the booming Christian yoga movement, which has spawned DVDs, books and even the trademarked program "Christ Centered Yoga," which has been approved by the American Council on Exercise. Still, it can be tough for religious yoga devotees to prove their practice is compatible with Christian beliefs.

Melissa Darby had gone to Catholic schools her whole life, but no lesson had ever touched her the way a power yoga class she sampled in 2003 did. "It brought my religion to a more real place," she says. So, she became a registered instructor with the Yoga Alliance and started her quest to bring yoga to the Catholic community of D.C.

It took eight months for Darby to convince the U.S. Conference of Bishops to let her teach at its D.C. headquarters. Unlike Sevivas, she avoids using Christian-specific imagery, preferring to evoke universal sentiments. "It scares the extremely religious because it's something different and unfamiliar," she says. But once they take her class, she says, the spiritual and physical benefits become clear.

Those twin perks are what inspired Janine Turner (of "Northern Exposure" fame) to co-produce, write and star in "Christoga," a chapter in a new DVD series called "Faith in Fitness." "It's two rewards in one," she says. "It helps deepen [viewers'] faith because people who won't take an hour to pray could take an hour to exercise."

It was key to Turner and her co-creator, fitness expert Mary Cunningham, that they make their practice accessible to Christians who might otherwise be hesitant. "Christians were feeling left out," Turner explains. "They couldn't do it. I think because of the Eastern religious influence, people felt that they were worshipping a different god."

Although the "Christoga" moves may look familiar, the names — angel's breath, holy rollers — will certainly be new. "We thought [renaming the poses] might be a little radical, but we decided we should just be Christian all the way," Turner says.

Sevivas customizes her teaching in a different way. At class' end, as everyone is lying on their backs with palms up, she places a stone in each person's hand and tells them to remember that God is their rock. "Sometimes you need something tangible, and God is our foundation," Sevivas says.

It was a favorite moment for Scuderi, who plans to return to Mbodyoga and incorporate its lessons into her daily life. "I think I will start holding a rock when I pray," she says.

Photo courtesy Marge Ely/Express;