Because there is no motivation like celebrity motivation.
Some stars have fought the battle of the bulge and won with flying colors.
Check out what the stars did to shed those extra pounds.
After cutting sugar out of her diet and sticking to a new exercise regimen, Duchess Sarah Ferguson lost more than 50 pounds. “Beatrice was an 8lbs. 8oz. baby and I was only 6lb off my full-blown pregnancy weight,” she told Hello magazine. “I decided to make a change.” Click here for more celebrity weight loss transformations.
Grammy-winner Adele looked almost unrecognizable when she showed off a slimmer figure while out an about in London. Click here to see more pics of Adele's new look on RumorFix.com.
After Biz Markie was diagnosed with type 2 diabetes, the rapper knew it was time to get in shape. Markie told ABC News he dropped an astounding 140 pounds because he "wanted to live." Click here for more amazing weight loss transformations.
Funnywoman Melissa McCarthy showed off a dramatic weight loss in a recent photo, right. It's not clear how many pounds the actress dropped but she is looking great. Click here for more celebrity pics from the HollywoodLife.com.
Just 3 months after welcoming daughter Summer Rain with fiance Matt Rutler, Christina Aguilera showed off her killer curves in a body-hugging red dress. This isn't the first time "The Voice" coach has revealed a major weight loss; she lost an estimated 50 pounds during her her hiatus from the fourth season of the singing competition show. Click here for more pictures of the singer from Hollywoodlife.com.
Zach Galifianakis stepped out in New York City sporting a slimmed-down frame. How did he drop the pounds? "The Hangover" star told Conan O'Brien last year that as soon as he quit drinking, the weight started coming off. Click here for more pictures of the slimmer star.
New mom Ciara showed off her 60-pound weight loss after giving birth to son Future Zahir Wilburn in May. "After Delivering My Son I Feel Like There's Nothing I Can't Do. I Feel Like I Can Conquer The World," she wrote on Instagram. Click here for more pictures of stars in their underwear.
Pratt showed off his 60-pound lighter frame at the premiere of his new movie "Guardians of the Galaxy." The "Parks and Recreation" star told Men's Fitness it took "three or four hours a day of just consistent, ass-kicking hard work" to shed the extra pounds. We're sure wife Anna Faris isn't complaining!
"Pawn Star" Corey Harrison
The History Channel star told People magazine he dropped 192 pounds. He was 402 lbs. at his heaviest and decided to get lap-band surgery.
"I could never go back to weighing as much as I did," he said. He is now 210 lbs.
The 32-year-old actress/singer showed off her bikini body while vacationing in Mexico. "It would take Mexico to get me to play on the beach ! I'm so not that girl ! But I work hard , I deserve it right ! Plus, I earned it !" Earned it she did -- Hudson lost 80 pounds on Weight Watchers. Click here for more of Hollywood's hottest bikini bodies.
The "American Idol" winner showed off her slimmed down figure with a sexie selfie on Instagram. Sparks lost an impressive 50 pounds and it looks like her hard work has paid off. For more pictures of the singer, go to X17online.com.
The country singer refused to give up drinking so instead she swapped chicken for steak and watched her portions.
"I spent my 20s on a roller coaster — my yo-yo weight, working all the time and partying. I just wanted to get healthier and go into my 30s in the best shape I could be in," she told People.
So what does hubby Blake Shelton think of his wife's slimmer figure?
"He said, 'I have never had a problem with any way you look at any point – you are beautiful to me at any size and every size,' " she explained. "But he has been proud of my hard work on this. He brags on me. That makes me feel great."
Nicole "Snooki" Polizzi
After gaining 40 pounds during her pregnancy, the "Jersey Shore" star wanted to get into top shape after giving birth to son Lorenzo.
"I mainly wanted to become healthy for my son," she told FOX411. "I always pictured myself to be a fit mom and that's exactly what I accomplished. I didn't lose the weight for my career, but it is great to see how I am inspiring other mothers to lose weight, and just girls in general to lose weight the healthy way."
The former "American Idol" winner gave a rocking performance at the Billboard Awards Sunday, but the talk of the night was her newly slimmed figure, a drastic change from her previous look (left).
The singer has made a point to say she doesn't care about her weight. But if those are the results of not caring, sign us up!
Carey has been making the rounds lately showing off her newly-slimmed physique after giving birth to twins earlier this year.
The pop diva said she lost 40lbs of bloat, and dropped an additional 30 using Jenny Craig.
She is now a spokeswoman for the brand.
“The whole point of this is not just like: ‘Oh, hey, look at me and my weight loss, I’m fantastic.’ It’s really health,” she told Rosie O’Donnell in an appearance on her show. “Like I said, I learned it when I became helpless and felt so vulnerable like never before in my life.”
(X17 Online/Life and Style)
Funnyman Jonah Hill dropped 40 pounds this year after working out with a personal trainer and a nutritionist.
The "Moneyball" star said he thought it was important to be healthier so he changed his lifestyle.
Of the weight loss he said, "It's not fun. I wouldn't say it's the most fun endeavor I've ever took on in my life -- but it's important. And I'm enjoying it."
Kirstie Alley has famously been up and down with her weight over the years, even admitting to People magazine in 2009 that she had gained 83 pounds.
Through an organic diet program she created and all that dancing on "Dancing With the Stars," Kirstie says she has dropped down to a size six and even an occasional size four.
John is down 100 lbs!
He showed off his new svelte physique on Letterman last June explaining that he was "pushing 400" or "somewhere up around there" when he was his heaviest.
"I'd lose 60 pounds every spring, and then I got too fond of the barley corn and I'd just start missing it too much," he explained, "and then it would just screw everything up. I'd gain it all back and then some every year."
The 58-year-old actor says that he doesn't want to "go nuts" and lose more weight.
"I'm not going to look like Paris Hilton or anything like that," he joked. "It's going to be an ongoing process for the rest of my life."
How's he maintaining he new weight?
"[I'm] getting a lot of exercise, I feel great," he said.
The "Dreamgirls" star went from a size 16 to a size 6 with Weight Watchers.
"I don't want to lose any more weight," she told InStyle. "You're never going to see me skinny... I think this is a good, natural size for me."
But then she stepped out EVEN thinner, and is reportedly now a size 4.
"Baywatch" star Nicole Eggert jump-started her 15 pound weight loss with a stint on the reality show "Celebrity Fit Club."
Khloe Kardashian says she shed 20 pounds in a little over a month by working out 45 minutes a day, five days a week, and maintaining a healthier, more balanced diet.
Since then, the star has been up and down a bit, but says she isn't defined by her weight. Hey, if she isn't worrying about it, why should we?
"The Price is Right" lost 80 lbs. in 2009. Why?
"I was sick of being fat on camera. Really, I just got sick of it. Once I started losing weight [and] started dropping a couple pant sizes, then it was easy 'cause once you see the results, then you don't wanna stop."
How did he get such amazing results?
"Basically no carbs, not even a cracker. No bread at all... No starches of any kind. Egg whites in the morning or Greek yogurt [and] some fruit."
Another huge perk to his dramatic weight-loss?
The type II diabetic has his blood sugar in check. "I'm not a diabetic anymore," he tells People. "No medication needed."
Seth reportedly followed Harley Pasternak's Five Factor regime to lose weight to play "The Green Hornet."
And by doing so, he feels like he's let his fans down.
"I think for chubby guys, I was their guy so they were like, ‘I can be chubby. Seth Rogen’s chubby, so who cares,'" he says. "But now I’m not so chubby anymore. So now they’re like, ‘I have to lose weight.’ I’ve let them down. I’ve blatantly sold out. It’s only for money.”
Queen Latifah became a Jenny Craig spokesperson in 2008.
“My intention was to lose five to 10 per cent of my bodyweight because it makes a difference with health related issues," she continues. "I achieved that goal in a couple of months.”
“I’m excited about this weight loss," the 5' 10" actress gushes. "My jeans are looser, I feel more energetic (and) people dig it."
Renee Zellweger goes up and down in weight almost annually.
The actress famously gained and lost 30 lbs for both of her "Bridget Jones" roles, relying on saturated fats to bulk up, then militant diets to trim down.
Jenny Craig spokesperson Sara Rue recently hit her 50-pound weight loss goal.
“I have such a better relationship with food than I’ve ever had in my life,” Rue, 31, tells People. “I’ve learned how to control portions, I’ve learned how to eat healthfully.”
Naturally skinny Tori Spelling used Nutrisystem and classic cardio to win back her TV torso after giving birth.
It remains to be seen what she will be doing to shed the weight from baby number 3.
America Ferrera lost her pounds the good old fashioned way - diet and exercise.
"I feel like I'm a regular person. I'm a size 10 or 12, which is totally normal. But I do feel that since I wanted to get in better shape, there has been a bit of a backlash," she has said of her shrinking frame.
Valerie Bertinelli made national headlines by dropping 40 lbs before her 49th birthday by using the Jenny Craig plan.
Kendra Wilkinson got bikini-ready again after having her baby, losing 25 pounds by staying off the scale, cutting down on carbs, and heading back into the gym.
Because there is no motivation like celebrity motivation.