3) Joaquin Phoenix Phoenix lost 52 pounds ahead of shooting the Joker movie, although the actor says that he sought medical guidance in order to lose the weight safely. He told Access Hollywood that he drastically reduced his daily calorie intake to lose the weight, and he was eating things like "lettuce and steamed green beans." Matt Winkelmeyer - Getty Images
4) Rob Gronkowski Gronk retired from the NFL earlier this year, and he's already lost a staggering amount of weight. While details on his weight loss are currently unknown, Gronk shocked fans when he showed up to the premiere of Showtime's 100 Percent: Julian Edelman looking noticeably slimmer, and without his signature muscles. However, it's totally normal for professional football players to lose weight after retiring and laying off their intense training and diets . Noam Galai - Getty Images
5) Mike "The Situation" Sorrentino The Jersey Shore star revealed that he lost 35 pounds while serving his eight month sentence for tax evasion. Sorrentino explained that he found it helpful to get into a routine, and he worked out about two or three times a day. He also took up intermittent fasting . "I would wake up every morning and I would do a very similar schedule," Sorrentino told Entertainment Tonight . "I was very regimented, I stayed in my intermittent fasting, which is not easy if anybody knows about fasting, for 16 to 19 hours a day it's not easy." Noam Galai - Getty Images
6) Kevin Gates The rapper told us that the decision to lose weight came after a very embarrassing incident . "I had my shirt off and I was holding my partners baby, and his baby tried to suck my breast," Gates explained. He likes to wake up early for weight training, core work, calisthenicspush ups, pull ups, dipsand meditation, and he also likes to go for hikes on the Santa Monica Mountains. Gates went on to drop from 310 pounds to 215. Josh Brasted - Getty Images
7) Simon Cowell Cowell has lost 20 pounds since 2017, and The America's Got Talent judge told Access that the secret to weight loss isn't in fad diets. "There's just too many, and they contradict each other... You just have to cut out the obvious," Cowell explained." Cowell decided to go (mostly) vegan , and he swapped cow's milk for almond milk, and regular yogurt for almond milk yogurt instead of the regular kind. Cowell also cut out meat, but he still eats fish occasionally. Frazer Harrison - Getty Images
8) Phil Mickelson Mickelson was seen looking a lot leaner in a family photo posted by his sister Tina, and he joked that, "FYI, those weird bumps on the side of my stomach weve never seen before, Doc called them obliques and said its nothing to worry about." The golfer lost 15 pounds when he underwent a six day fasting period back in July when he was prepping for the British Open, and his diet only consisted of a special blend of coffee and water. Tom Pennington - Getty Images
9) Kevin McHale The Glee star was spurred to change his diet from stomach pain. I had been working through an intestinal/digestion issue that was eluding diagnosis and that really took a toll on me," McHale told us . As he put it, he had become skinny fat, eating out almost every night. McHale changed his diet, ended up with a trainer, and lost seven pounds of fat and gained five pounds of muscles in the span of 12 weeks. My whole body composition is completely different," McHale said. "The shape of my body is 100 percent different. Gregg DeGuire - Getty Images
10) Chris Santos Chris Santos wrote on Instagram in October 2018, I started this journey to a much healthier me on June 20, and so far Im down 30 pounds. Look for before and after part 2 when Ive lost another 15 to 20! The Chopped judge decided to make the change after a decade of weight gain , switching his diet to a more plant-based diet and intermittent fasting three days a week. Also, less beer, more running. Im going to keep running one every other month for a while until I can do a 10K, he told People. Im not going to sit here and say that my goal is a marathon, but Im not going to say that its not. Cindy Ord - Getty Images
11) Chris Pratt The ever-lovable Andy from Parks and Rec transformed into a total beast for Guardians of the Galaxy. Our interest piqued after a now-legendary Intsagram post , but the key to Pratts transformation wasnt too complicated. Three or four hours a day of just consistent, ass-kicking hard work, he told Mens Journal . According to the magazine, Pratts routine included P90X, running, swimming, boxing, kickboxing, and a triathlon. And a whole lot more water. I was peeing all day long, every day. That part was a nightmare, he said. NurPhoto - Getty Images
12) Ed Sheeran The singer-songwriter put on a significant amount of weight after a tour, he told Total Access on Signal 1 Radio. My diet was pizza and beer, he said, but because I was doing two hours a night I was really in shape. I stopped touring and carried on my diet of pizza and beer. Suddenly I didnt fit in anything. So Sheeran asked his girlfriend, a hockey player, to intervene. I did 10 minutes a day without fail: intervals of 30 seconds and 30 seconds sprinting, he said, The key is to not miss a day, so you dont have to do an hour." Kevin Mazur - Getty Images
13) Jonah Hill Jonah Hill was labeled the funny fay kid after Superbad, Jonah Hill has battled a series of weight fluctuations . We suppose it helps to have Channing Tatum as consistent co-star to finally get whipped into shape. "I wanted to get in better shape, Hill said on The Tonight Show, so I called Channing Tatum and said, 'Hey, if I ate less and go to a trainer, will I get in better shape? Yes, you dumb mother****er, of course you will. It's the simplest thing in the entire world. Its more than just thatHill has apparently added boxing to his fitness routine. Dimitrios Kambouris - Getty Images
14) DJ Khaled DJ Khaled is definitely a big dudeso its doubly impressive that hes sticking to a Weight Watchers diet and lost at least 26 pounds so far. Its not about losing weight for him, but about staying healthy. I'm not in any race to get rid of weight, he said in an Instagram post . I just want to make sure I stay super focused and continue at being healthy. So far, its been nothing but a success. The freestyle program is doing real big, he told Page Six . Its a real lifestyle because all you have to do is not go over your point [total]. And there are so many zero points [foods] in case you get hungry. I got the freestyle dance. John Parra - Getty Images
15) Dan Reynolds The Imagine Dragons front man looks jackedall in spite of the fact that he lives with a rare autoimmune disease, ankylosing spondylitis (AS). It causes inflammation in the spine and can lead to pain in different parts of the body. The only thing that really helped him: diet and exercise. So in early 2017, he got a trainer and started working out one to three hours, seven days a week. It took over a year for him to go from skinny fat to totally shredded, but the results speak for themselves. Francesco Prandoni - Getty Images
16) Rob McElhenney Rob McElhenney was well-known as Fat Mac for at least a season on Its Always Sunny in Philadelphia. No longer. After being spotted at the LA Pride parade with the body of a comic book hero, McElhenney came clean in an Instagram post . Look, its not that hard, he wrote. All you need to do is lift weights six days a week, stop drinking alcohol, dont eat anything after 7pm, dont eat any carbs or sugar at all, in fact just dont eat anything you like, get the personal trainer from Magic Mike, sleep nine hours a night, run three miles a day, and have a studio pay for the whole thing over a six to seven month span. Sounds easy enough. Alberto E. Rodriguez - Getty Images
17) Kevin Smith The scale said 198 today! This is the first time since high school that Ive weighed under 200 pounds!" director Kevin Smith wrote in an Instagram post . The Clerks legend had long been overweight and suffered a heart attack as a resultthe magic bullet seemed to be Weight Watchers , which Smith is an ambassador for. Six months ago from right now, I was in the hospital recovering from a heart attack Id had the night before, he wrote in an Instagram post late last year . My hope now is I can slowly lose another 10 with #weightwatchers and get down to my birth weight of 195! L.O.L. Good on you, Kev. Vivien Killilea - Getty Images
18) Jake Gyllenhaal A-lister Jake Gyllenhaal was never really overweight, but he looked absolutely cut in the film Southpaw to play boxer Billy Hope. To prepare for the role, Gyllenhaal enlisted the help of boxing coach Terry Claybon . His routine consisted of an exhausting amount of morning runs, jumping rope, drills, shadow boxing, tire flips, bag work, and more. As for diet, well, that was out the window. We trained really hard every day, all day, and you can eat a lot when youre in that mode, Gyllenhaal told Mens Journal. It was always high protein. I remember eating a lot of Chipotle. NBC - Getty Images
19) Al Roker The Emmy-winning Today Show weatherman looks flat-out completely different than just a few years ago. In 2002, Al Roker slimmed down to 190 pounds with a gastric bypassafter ballooning up to 340 pounds. But he had a hard time keeping the weight off, regaining 40 pounds after turning to junk food during a stressful time. I went back, he said on Today. And I hated it. I know what I have to do now to keep that from happening again. That was a smart combination of diet and exercisebeginning with a 28-day cleanse. Hes stayed slim by eating whole, unprocessed foods that are high in protein and low in carbs. NBC - Getty Images
20) Josh Peck The star of Nickelodeons Drake and Josh might have been the funny chubby kid, but no longer. In 2006, he said , 'I made a conscious effort to lose weight because I knew I could be happier as well as being healthier. Now 32, he makes a point of showing off his slim physique . I started by going on a diet, he said, and I got a personal trainer, but I definitely have a healthier lifestyle now." Good on you, Josh. Charley Gallay - Getty Images
21) Sam Smith Buttery voice? You better believe it. Buttery diet? We dont think so. British crooner Sam Smith dropped an incredible 50 pounds in 2015 after a lifetime of emotional eating. "From a young age, food has controlled me, basically," he said to 60 Minutes Australia. When I was at school and wasn't having a great time or when music wasn't going very well, I would eat. When I felt lonely, I would eat. He credits nutritionist Amelia Freer for his incredible transformation. And hes keeping the weight off by going to the gym with a personal trainer at least three times per week . Brian Rasic - Getty Images
22) Gordon Ramsay Hard to not over-ear when youre the host of Hells Kitchen. [My wife] Tana was not impressed with the way I was, he told The Daily Mail . I was overweight, 18 stone. I looked like a sack of s***. Fear of losing your wife is certainly a great weight loss motivator, and Ramsay enlisted the help of Will Usher, a former Army captain and member of the Royal protection squad. Ramsay wanted to do an Ironman race, so Usher put him through a regimen of swimming, rowing, core strength work, three-hour-long workouts on a gym bike, and outdoor foot racing. His top diet advice? Nothing fancyjust lots and lots of water. Rob Kim - Getty Images
23) Jimmy Kimmel Late-night star Jimmy Kimmel had always been a big guyjust watch a Man Show reruneating mostly wings, pasta, and steak in his younger years and going up to 208 pounds. In 2010, Dr. Oz spurred him to make a change. I'm worried about you, Dr. Oz told him . You're a young man. You have to take care of yourself. I was like, You know what? Dr. Oz shouldn't care more about my health more than I do. So he started occasionally, well, starving himself. People call it the 5:2 diet, he said, but I've been doing it since before it had a name. On Monday and Thursday, I eat fewer than 500 calories a day, then I eat like a pig for the other five days. Unorthodox, but it worked: the comedian dropped 25 pounds. Randy Holmes - Getty Images
24) Drew Carey Whos Line and The Price Is Right host Drew Carey was spurred to shed pounds after realizing he wanted to be there for his son in 2010. I had to change my whole belief system, he told Success . It wasnt like, Eat this for 90 days and lose 20 pounds. It was: Eat like this for the rest of your life... 95 percent of the time, Im right on the money. He stopped drinking caffeine and alcohol, stopped unhealthy snacking, started exercising regularly, and the result speaks for itself: over 70 pounds dropped. Denise Truscello - Getty Images
26) Rick Ross Rapper and producer Rick Ross was always a big fellow until his startling 100-pound weight loss. Howd he do it? Simple: he learned how to balance his appetite with hitting the gym. Its all about the balance to me, Ross told ABC News . I wanted to balance myself but still enjoy the things I love so if I lost weight one year, the next year it wouldnt be right back on me." Ross said he does Crossfit-like workouts at least four times per weekbut still enjoys wings at one of the many Wingstop restaurants he owns. Plus, healthy snacking: I try to throw in healthy snacks in between the meals, he said. That was really my trick, and slowing down the heavy meals as it got later in the day. Tabatha Fireman - Getty Images
27) Alec Baldwin When hes not skewering the president on Saturday Night Live, Alec Baldwin likes to eat cleaner than he ever has. Diagnosed as pre-diabetic a few years ago, the actor was spurred to change his ways by his wife Hilaria . After years of eating out, eating late, and eating too much, hed fallen into some bad habits without realizing it, she told People . His sugar intake was far too high. So he cut out pasta, bread, and other refined carbsdropping 25 pounds and looking better than ever. Kevin Winter - Getty Images
28) Ricky Gervais It wasnt so much about the weight, comedian Ricky Gervais told People magazine in 2010 . It was more that I was a fat, lazy, out of shape slob, to be honest. He said he lost about 20 or 22 poundssimply by running around his neighborhood (and no late-night meals). Now Ive got to stop making jokes about fat people, which is annoying, Gervais complained. When I was fat, it was okay. If you say so, Ricky. NBC - Getty Images
29) Jason Alexander Plump George from Seinfeld has struggled with his weight his whole life . The industry has typecast me as George, he told People. By getting this weight off, the impression of me will change. Id be happy to have that. Alexander went on the Jenny Craig diet plan, cutting his calories from 4,500 to 1,500 a day, and started working out five times a week. He lost 14 pounds in only a few weeks. My younger son has a nickname for me: SFBshort, fat, bald, the actor told the magazine. I said to him, Youre going to have to make it just SB pretty soon!' Tara Ziemba - Getty Images
30) Jayceon Terrell Taylor Rapper The Game was on top of the world back in 2013 following two Grammy nominationsbut he definitely had a few pounds to lose. The goal was to dramatically change my eating habits to a clean diet without error, he wrote on Instagram , as well as shed the body fat wit massive cardio/ab workouts - Running, hiking, cycling etc. He joined BWS Byrd's exercise program 60 Days of Fitness and regularly documented his journey on social mediathe rapper looked cut and fit in almost no time. Replaced body fat with muscle. Simple, he wrote. Gabriel Olsen - Getty Images
31) John Goodman Rosanne actor John Goodman lost an astounding 100 pounds with the simplest method possible. It was basically just portion control, and I dont need it, he told AARP the Magazine . I was just shoving everything into my mouth. Goodman told David Letterman in 2011 that he was pushing 400 pounds at his heaviest and decided to cut sugar and alcohol out of his dietalong with regular workouts. But Goodmans hedging his bets, telling AARP, But I dont want to be an example to anybody when the weight comes thundering back onwhen I start eating Crisco out of the can with a spoon and a side of confectioner's sugar. Best of luck, John. Robert Trachtenberg - Getty Images
32) Randy Jackson American Idols Randy Jackson blew up to 350 pounds and was motivated to make a change after being diagnosed with type 2 diabetes. In 2003, he opted for gastric bypass surgeryand lost over 100 pounds. To keep the weight off, Jackson started eating right and going to the gym more. I am very attuned to knowing when I have had enough," he told WedMD . "The signal to stop eating is going to come from your body, not an empty plate." He also never goes anywhere too hungry and learned to make healthier versions of the foods Southern comfort food grew up loving likelow fat sweet potato pie or Cajun spice bread. Rachel Luna - Getty Images
33) Zach Galifianakis The husky weird dude from The Hangover looks a whole lot different now. Zach Galifianakis looks a whole lot trimmer, and credits giving up booze . I stopped drinking and I just, kind of, put the weight off, he told Conan OBrien . I was having a lot of vodka with sausage. Delicious, but bad for you. Quite the inventive combo. Is it really that simple? Yes it is, folks. And Galifianakis added it all almost happened by accident, continuing, I was getting into too much trouble with the drinking, so I just kind of stopped. So many empty caloriesjust gone. Rich Polk - Getty Images
