Lauren Conrad, 24, told Women's Health she often prepares fish and vegetables for dinner. To keep in shape, she prefers hiking, kayaking and playing tennis.
"Any way to make a workout feel like playtime is great," she said. "The stress just melts away."
Named last year's 'Sexiest Man Alive' by People Magazine, actor Ryan Reynolds keeps in shape by running. Last year he completed the ING New York City Marathon (26.2 miles) to raise funds for the Michael J. Fox Foundation. Reynolds' dad has battled Parkinson's disease for 15 years, so he understands Fox's plight.
Heidi Klum, 37, told Self Magazine she went running every morning in New York City during the taping of "Project Runway."
"Over seven weeks I ran 120 miles," she said. "I don't love running, but I do like to see everything getting tighter and toned."
Fergie, the lead singer of the Black Eyed Peas (and a solo artist in her own right), keeps a hypnotherapist on speed dial when she's touring, according to Marie Claire magazine. The singer-turned-actress (she's starred in Rob Marshall's movie "Nine"), had to gain and lose several pounds for the role. Fergie keeps her weight in check by strength training and of course, dancing around the stage night after night.
Star of the movie "Due Date," actress Michelle Monaghan told Women's Health she tries to drink green juice (that includes kale, celery and spinach!) three times a week, and she never misses breakfast. Monaghan likes to keep berries in her fridge for a fresh snack, and she always stretches in the a.m.
Monaghan told the magazine she wasn't always a health fanatic - in fact, she used to be a regular at McDonald's, but once she got pregnant with her daughter, Willow, she decided to trade fast food for vegetables.
"Ultimately, it's eating sensibly," she said. "But, if I'm at a restaurant, all bets are off."
One of the ways this actress stays stress-free? "I adore playing golf," Catherine Zeta-Jones was quoted as saying in People Magazine. "It's a great sport when you are traveling. You can take your clubs and play anywhere."
Comedian Chelsea Handler of "Chelsea, Lately" and "Are You There, Chelsea?" keeps fit by doing Pilates at 6 a.m. every day, according to an interview with Redbook.
Handler said she also has her staff meet with a yoga trainer once a week.
Now that's dedication!
Make no mistake about it: Beyonce will splurge once a week on a pasta or pizza, reported Self Magazine. But in order to get in shape for her 110-date world tour, Beyonce worked out five times a week with a personal trainer, doing as much cardio as she could. (This included running three to six miles a day).
It's no secret that Republican vice-presidential candidate Paul Ryan does the intense P90X work out every morning. He says he wants to stay in shape since his father, grandfather and great-grandfather all died of heart-related diseases in their 50s.
Even before he was elected, President Obama enjoyed early morning workouts at his gym in Chicago. But what Obama really loves is to shoot hoops.
"Most of my workouts have to come before my day starts," Obama told Men's Health magazine in an interview for its November 2008 issue. "There's always a trade-off between sleep and working out. Usually I get in about 45 minutes, six days a week. I'll lift one day, do cardio the next."
Kate Hudson, pictured here at a New York Yankees/Baltimore Orioles game in July 2009, admits to being an athletic woman. "I had to play sports to keep up with the boys," she told People Magazine. Among the sports Hudson enjoys? She has been photographed numerous times playing tennis. No wonder her arms are so toned!
Mila Kunis, star of "Friends With Benefits" and "Black Swan" told Glamour she likes to hike with friends.
In the interview, Kunis noted she used to stay indoors and play video games all the time, but now she prefers this healthier alternative.
OK, so he looks a little rough around the edges, but there is no denying that Matthew McConaughey has one hot body. That's because he's always doing something physical - like surfing with wife Camila Alves, running on the beach, or throwing the first pitch at an Major League Baseball game (like at this one between the Mets and the Dodgers in Los Angeles in May 2009).
Jenny McCarthy, who recently posed for Playboy, admits to using Botox in her forehead and says the secret to looking good is in how much you put in your mouth. She won't admit to any exercise plan, but said she eats and drinks in moderation.
A recent photo of actress Heather Locklear in People Magazine shows the former Melrose Place star playing tennis in Los Angeles.
No wonder this 50-year-old looks so youthful!
Never mind the personal trainer, steal the get-fit secrets of your favorite stars.