The Fit 5: Tips to Feel (and Look) Like a Star!

Jennie Garth toned up for her comeback role on the new 90210 by working out five days a week with husband actor Peter Facinelli to trainer Tony Horton’s P90X DVDs. “Every day is different,” she says. “One day is really hard yoga. Then arms and shoulders, legs, then karate. His program is made to confuse the muscles so you don’t plateau. I feel better now than I ever have.” Read about other exercise DVDs to get your body moving on Health.com. – Charlotte Triggs

To help drop her pregnancy pounds, Jessica Alba added an Expresso exercise bike to her home gym. “She likes the program that allows her to collect points – it’s a lot like a video game,” says her trainer Ramona Braganza of the Expresso, which offers more than 30 Web-based virtual reality cycling courses. That way, she says Alba can focus on the score, and take her mind off the work. Find out more about high-tech cycling classes near you! – Amy Keith

She plays an intense publicist on HBO’s Entourage, but when it comes to her diet, Debi Mazar is much more relaxed. “I believe in balance, nothing too radical,” says Mazar, who hosts UnderTheTuscanGun.com, an online cooking show with husband Gabriele Corcos that focuses on fresh, healthy Tuscan recipes. “I love food, and I love culture. Food is a celebration, so I think when you eat well-balanced, that’s the key.” Slow down and enjoy Health.com’s suggestions for some good-for-you treats. – Shruti Dhalwala

Good genes factor into Jennifer Lopez’s and Uma Thurman’s great skin, but even natural beauties need help getting a dewy complexion. Both stars are fans of Perricone MD Cosmeceuticals. Developed by dermatologist Nicholas Perricone, the skincare line contains the key ingredient DMAE – a patented antioxidant cell stabilizer, which helps improve elasticity and tone. Thurman loves the Ceramic Skin Smoother (1 oz. for $75), which diminishes pores and fills in lines and wrinkles. Improve your skin from the inside out with Perricone’s five favorite face-saving foods! – Maureen Harrington

Brooke Shields wore the same pair of jeans she modeled in Calvin Klein ads 28 years ago at a recent bash for the designer’s 40th anniversary. So, how does she stay so fit? “If I stay away from too much carbohydrates, I’m usually better off,” says the 43-year-old mom of two, who also does spinning and yoga. Though whole grains and brown rice are on her menu, Shields doesn’t “believe in denying myself. I don’t want to go through life not enjoying.” Get Health.com’s tips for the right foods to help you stay at your ideal weight. – Charlotte Triggs