Celebrity trainer Mandy Ingber sees herself as a bridge between the yoga and fitness worlds.

Want a physique as awesome as Jennifer Aniston’s? You might not be able to see it in the mirror yet, but you already have one, says Mandy Ingber. And she’d know. The celebrity yoga and fitness instructor works out with the “Friends” star three days a week, using a plan she’s broken down for wider audiences in her new book, “Yogalosophy: 28 Days to the Ultimate Mind-Body Makeover” ($20, Seal).

At the heart of Ingber’s fitness strategy is a simple idea that she’s slapped right on the cover: “Having the body you want begins with loving the body you have.” It’s the advice Ingber gave herself years ago when she packed on 50 extra pounds after a random physical assault.

“If I love myself now, then if nothing changes, I’ll at least feel better,” Ingber remembers thinking. The positive-reinforcement approach created a snowball effect of healthier choices. She returned to the yoga practice she learned from her father when she was growing up, and soon enough, she was pumping the pedals of a bike at the front of a Los Angeles cycling class.

Her passion drew in the Hollywood elite, and Ingber — a former actress whose credits include “Cheers” and “Teen Witch” — found herself training Aniston, Kate Beckinsale and Helen Hunt.

The method Ingber relies on to keep her clients red-carpet ready is a hybrid yoga routine that pairs each pose with a toner.

So when she’s on all fours for the spinal stretch of cat-cow, she adds in side leg lifts. After holding side plank, she does a set of tricep pushups.

“It’s a little something extra,” Ingber says. “For people who’ve never done yoga, it’s something familiar. For people who have, it makes it a little more challenging.”

Depending on how many squats she tacks on to chair pose, it can be a lot more challenging — but also a lot more effective.

Ingber sees herself as a bridge between the yoga and fitness worlds. A self-proclaimed “cardio queen,” she values incorporating other forms of exercise into her schedule.

That’s why the 28-day plan detailed in the book goes beyond her standard selection of yoga poses and toners to suggest supplements such as dance parties, long walks and even mountain climbing.

Each day comes with an intention, a playlist, a recipe and other guidance, but Ingber wants to make sure her readers understand they have plenty of leeway to do whatever feels right.

“Nothing is rigid, and everything is movable,” says Ingber.

No matter your mood, Ingber recommends carving out time every day to write down five things you’re grateful for.

“If you focus on what’s wonderful, that’s where the energy will go,” she says. “If you just did that for 28 days, you’d see a difference.”

A Menu of Diets

A specific diet isn’t part of Mandy Ingber’s Yogalosophy — three are. She offers options for people who want to eat “clean” (an omnivore plan that focuses on portion size), “lean” (a low-carb plan for lacto-ovo vegetarians) and “green” (vegan). “I don’t want people to think there’s one right way to eat,” says Ingber, though she believes sticking to a plan can help them make better decisions about what goes in their bodies. Her favorite dish? Roasted cauliflower. Ingber admits she needs twice-yearly juice fasts to clean her system. “I always degenerate to chocolate and coffee,” she says.

Details: Mandy Ingber visits Flow Yoga Center on Saturday to teach two sessions of “Love Your Body Into Shape” ($45, 2 and 4 p.m., 1450 P St. NW, Flowyogacenter.com). The 75-minute master classes will provide students with a taste of her Yogalosophy routine, a goodie bag and a chance to buy a signed copy of her book.