Eric Allan Kramer, the versatile American actor and fight choreographer renowned for his commanding screen presence, has not only captivated audiences with his performances but also inspired many with his commitment to health and fitness. Best known for his roles as Bob Duncan in the Disney Channel series Good Luck Charlie and Little John in Mel Brooks' Robin Hood: Men in Tights, Kramer's personal transformation has mirrored his on-screen adaptability.
Early Life and Career
Born to Roger Kramer, a former professional Canadian Football League player, Eric Allan Kramer was instilled with a sense of discipline and dedication from an early age. He pursued higher education at the University of Alberta in Edmonton, completing a Bachelor of Fine Arts (BFA) program.
Kramer's acting career began in 1987, with his debut role in the television film The Gunfighters. His breakthrough came in 1988 when he portrayed the Marvel Comics superhero Thor in The Incredible Hulk Returns. Throughout the 1990s, he appeared in numerous television series, including Murder, She Wrote, Empty Nest, and Seinfeld.
One of Kramer’s most notable television roles was as Dave Rogers on the sitcom The Hughleys, which aired from 1998 to 2002. He later became a household name among younger audiences for his portrayal of Bob Duncan in the Disney Channel series Good Luck Charlie (2010-2014). In addition to his on-screen roles, Kramer is an accomplished fight choreographer and has been actively involved with the Antaeus Classical Rep Company in Los Angeles. As of 2025, Eric Allan Kramer remains active in the entertainment industry, with recent appearances in television series such as Lodge 49 and Side Hustle.
The Turning Point: Recognizing the Need for Change
While filming the third season of Good Luck Charlie, Kramer, then playing the goofy, overweight, hapless father Bob Duncan, noticed he had gained a significant amount of weight. This physical change was impacting his health, causing knee problems and a general feeling of weakness.
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"At the start of the season, I was limping around with knee problems and felt really old and weak. When I looked at myself on the show, I didn't recognize myself. I actually said, 'Who is that guest star?' and that's when I said, 'Holy crap! Time to get back to the gym,'" Kramer told QMI Agency in 2012.
Kramer realized that he had "really bottomed out." Balancing a full-time show with being a single father had led him to neglect his own well-being. This moment of self-awareness became the catalyst for his transformation.
The Transformation: Diet and Exercise
Starting in January, Kramer committed to a consistent workout routine, visiting the gym four times a week. His workouts combined weight training and cardio exercises. He also modified his diet, shifting from an "anything goes" approach to eating smaller, lighter meals spaced throughout the day.
This commitment to diet and exercise resulted in a noticeable change in Kramer's physique. By the end of the filming season, he had lost 35 pounds.
On-Screen Acknowledgement
Kramer's weight loss was so significant that the writers of Good Luck Charlie were compelled to address it in the show. "The writers started coming up to me, saying, 'Hey what's going on? We wanted to write a joke about your physique and now we can't,'" Kramer said laughingly.
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The change was explained in the show's end cliffhanger, acknowledging the actor's real-life transformation. The comedian is still playing Bob Duncan as funny.
A Gradual but Noticeable Change
The actor said his body's beautiful change has been gradual, but noticeable. It started with consistent visits to the gym, four times a week, where he does a combination of weight training and cardio.
His diet was modified from "anything goes" to smaller, lighter meals spaced properly throughout the day.
Inspiration and Impact
Eric Allan Kramer's weight loss journey serves as an inspiration to others. His story demonstrates that with dedication and a commitment to healthy habits, significant transformations are possible. As of 2025, Eric Allan Kramer’s net worth is estimated to be around $4 million. This wealth has been accumulated through his extensive career in acting and fight choreography. Throughout his career, Eric Allan Kramer has contributed to various charitable causes, often leveraging his public platform to support initiatives related to children’s education and health.
The Broader Context: Celebrity Weight Loss Journeys
Kramer's experience is part of a larger narrative of celebrities who have openly shared their weight loss journeys, often driven by health concerns, career demands, or a desire for self-improvement. These stories resonate with the public, offering both inspiration and practical insights into the challenges and triumphs of weight management.
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Adele
Adele's trainer, Pete Geracimo, emphasized that her transformation was about health, not just weight loss. He noted that as she prepared for a grueling 13-month tour, she "warmed to training and made better food choices." Estimates suggest she may have lost around 150 pounds.
Kelly Osbourne
Kelly Osbourne has spoken about the criticism she faced for her weight, highlighting the societal pressures surrounding body image.
Tammy Slaton
The 1,000-Lb. Sisters star underwent gastric bypass surgery in September 2022 and proceeded to cut down on her “sodies” and other bad habits. “At my rock bottom, I was weighing about 725 pounds,” Slaton said during an October 2024 episode of the TLC series. “The last time I saw Dr. Smith was about nine months ago and I was around 420 pounds. He told me I had to lose 100 pounds before my next appointment.
Rebel Wilson
The Pitch Perfect actress dubbed 2020 her “year of health,” aiming to hit 165 pounds, which she achieved by November of that year. The Pitch Perfect actress has maintained her weight loss, telling Us in June 2024, “There’s no magic fix. I’d been on diets [and] I’ve been really good [about] exercising pretty much my entire life. For me, it was the emotional element that I’d never looked at.
Rex Ryan
The retired NBA star confirmed in May 2023 that he was down 62 pounds after adding the Mounjaro shot into his regiment six months prior. "I'm working out, I'm taking my shot once a week," he said during an appearance on the Pat McAfee Show.
Josh Peck
"I think you got to find peace with yourself and at some point, look in the mirror and go, 'You know, it's probably time to take care of you.' And I didn't get that note early on," the actor shared, noting he tackled his health during the COVID-19 pandemic, which involved him undergoing bariatric surgery, eating healthier and more.
Ed Sheeran
After gaining weight on tour and years of smoking, the “Shape of You” singer has lost 50 pounds. In an interview on “Behind the Medal” podcast released on December 20, 2019, the British singer revealed that he quit smoking three years prior and got into running to “clean my lungs out.” He started by only being able to run for “three songs” bit is now fit enough to do 45 minutes in the morning followed by a swim or sit-ups. The “Put It All on Me” singer attributed his weight gain to American food while on tour saying, “You finish a gig in America [and] you get a tray of chicken wings, sit in the back of the bus, watch The Simpsons, drink a couple bottles of wine.
Ryan Lochte
After being plagued by scandals following the Rio 2016 games, the Olympic swimmer took a break from the sport. But in October 2019, Lochte shared a before and after photo of himself on Instagram, announcing that he’d lost 21 pounds in just two months and was getting ready for a Tokyo 2020 bid. “I’ve adjusted my diet and upgraded my fitness routine and I’m down 21 pounds since Nationals in August!
Mama June
“You’ve got to love yourself no matter who you are,” Mama June said on the show in August 2018. “I was 350 pounds to 150 pounds and now I’m back up to 200 pounds.
Jonah Hill
Jonah completely changed his lifestyle to reach his weight loss goals. “I spent most of my young adult life listening to people say I was fat, gross and unattractive,” he told Ellen DeGeneres.
Blake Lively
Blake Lively opened up about her post-baby body on Instagram in February 2018. The accomplished actress credited her personal trainer for helping her get back into shape at the time. We have no doubt that Blake will be able to do the same now that baby No.
Melissa McCarthy
Melissa McCarthy oozes confidence and that’s one of the reasons she’s adored. “We have to stop categorizing and judging women based on their bodies,” she wrote via Instagram in 2016.
Gordon Ramsay
Gordon Ramsay revealed that he worked on his appearance to impress his wife. “I was overweight, 18 stone. Since then, Gordon has turned his life around!
Jenna Jameson
Jenna Jameson has put in major work to achieve her weight loss goals. Jenna reportedly meal preps and typically sticks to a similar diet. the next morning.
Rob Kardashian
Longtime fans of Keeping Up With the Kardashians have seen Rob’s past struggles with his health. Rob would “isolate from the rest of the world and spend days on end eating junk food, watching TV and playing video games,” the aforementioned source said.
Khloé Kardashian
Khloé Kardashian worked out five to six days a week to tone her post-baby body. The songstress is “thrilled” with her 25-pound weight loss. “She seems to be exuding happiness and she is,” a source told the site in June 2018.
Post Malone
The “Circles” singer lost 55 pounds in one year by simply cutting sugary soda out of his diet. “Soda is so bad.
John Goodman
The Mike & Molly alum is nearly half the man he used to be after losing a whopping 150 pounds. Billy told Entertainment Tonight in an April 17, 2023, interview that he’s “walking around pretty healthy these days” with his weight floating “between 205 and 210,” after previously tipping the scales at 370 pounds.
Al Roker
The former American Idol judge underwent gastric bypass surgery in 2003, and he's since kept off the 114 pounds he initially lost. "You have to change the way you think about food," the Name That Tune star explained in a 2022 tip for his company Unify Health Labs. "You have to almost have a complete divorce breakup …
Ty Pennington
“Between gyms closing, a running injury (I have a torn meniscus) and survival eating at work, I gained a good amount of weight in 2020,” the Kann restaurant founder wrote. “At my highest weight ever, I pressed the health reset button in July. But everything that had worked in the past including yoga and intermittent fasting just wasn’t working. I power walked on a treadmill for months until my therapist told me I could run again.
SZA
The Marvel star reflected on his 112-pound weight loss after spending most of 2020 working on his overall health. “I decided to get into this sort of transformation, or this sort of journey, with my health and fitness at the end of 2019. Even when I wasn’t doing anything physical, I found myself getting sleepy at work and it was because of all the fat food I was eating," he explained to Men's Health in December 2021. “I could not believe I let myself get this far. That’s what sort of started it all.” After establishing a diet and exercise regimen, the Spider-Man: Homecoming actor dropped a significant amount of weight.
Lizzo
The “Mongolia” rapper told Men’s Health in December 2020 that he lost 127 pounds in nine months after getting serious about his health in March amid the coronavirus pandemic. “I’ve been a big boy my whole life and it got out of control,” he said, noting at his heaviest he was about 400 pounds.
Michelle Visage
The RuPaul’s Drag Race judge unveiled his impressive weight loss in November 2020. “Breaking the pattern. 50lbs down today from my height in early June when I decided to reclaim my health after my mom died (70lbs down from my all-time),” he wrote via Instagram. “I will always be a work in progress. I may mess up again. I dunno. All I know is that I’m very grateful. And very happy. 🥰 On we go…
Raven-Symoné
The former Cheetah Girls star opened up about how staying committed to her wellness journey helped her through the coronavirus pandemic in May 2020. "During this time more than ever… Staying healthy is at the top of my mind!" she wrote via Instagram at the time, posing in a black bikini. "I'm constantly reminding myself that the greatest form of self love - is self discipline! They say it takes 21 days to form a new habit… I just want to encourage you to take this time to develop healthy habits! Drink your water, squat, rest, read, pray, take your vitamins, eat your veggies! (Preaching to myself to keep going! Lol) It’s a new month!
Jax Taylor
In May 2020, the Vanderpump Rules personality put her 20-pound weight loss on full display during the season 8 reunion. One month earlier, she told fans that she was feeling "good" after slimming down and working with a "really great" nutritionist. "I thought it was a thyroid thing, so I was going to the doctor and getting blood work done," she replied to an Instagram follower.
Paul Staehle
While serving time in prison, the 90 Day Fiancé star turned to fitness and debuted his more than 120-pound weight loss. "I know it's a tough time for everyone right now. And we're all going through it. We just have to stay strong and positive and together we will get through it," he wrote via Instagram in March 2020. The next month, he claimed that his new look drove a wedge between him and his estranged wife, Anfisa Arkhipchenko.
Andrew Zimmern
The celebrity chef revealed that he lost 70 pounds in less than three months while in quarantine amid the coronavirus pandemic and credited his friend, athlete and trainer Lucas Cancelier, for the transformation. "Who would ever think that a pro rugby player would get stuck with me and that he would change my whole life? He's more than a coach.
Simon Cowell
Switching to a vegan diet and living a more active lifestyle made a 20-pound difference! “When you're 60, and you have a 5-year-old little boy, who, when he wakes up, is bouncing off the ceiling, it's like, you've got to try and keep that energy yourself,” the X-Factor judge told Us Weekly in September 2019 of getting healthier in an effort to keep up with his son, Eric. “So that was my biggest thing, but changing my diet and everything else. I've got to play football with him. I've got to take him go-karting.
Kevin Smith
After suffering a near-fatal heart attack in February 2018, Smith’s physician told him to lose 50 pounds. The director revealed he was halfway to his goal a month later. By May 15, 2018, Smith had shed 37 pounds. He shared in an Instagram post: "I've lost 37 out of the 50 lbs.
Missy Elliott
Elliott flaunted her new body on Instagram in May 2018. “Proudly to say it’s been 4 months I have only drank water no other juices or soda & I cut out bread & Lord knows that’s been the hardest for me!” The “Work It” rapper - who looks fantastic now, though her weight has fluctuated a bit - not only showed off a slimmed-down figure, she also said her new diet helped her skin glow and made her feel less sluggish.
Jonah Hill
From Superbad to super-slim! Hill first revealed his 30-pound weight loss before production began on 21 Jump Street back in 2011. "He got a nutritionist and a trainer," a pal told Us Weekly.
Tyler Baltierra
The Teen Mom OG star put his slimmer figure on display in February 2018 when he revealed he lost 35 pounds in two months. “I’m not really ‘on a diet’ I just started caring more deeply about what I was putting in my body,” Baltierra tweeted at the time.
Chris Pratt
After deliberately gaining weight to play Andy Dwyer on Parks and Recreation, Pratt lost 60 pounds in six months to become action star material in 2013. The Guardians of the Galaxy actor cut out beer, upped his calorie intake to 4,000 calories a day and drank a bunch of water.
Jimmy Kimmel
The Jimmy Kimmel Live! host wasn’t concerned about his weight until Dr. Oz was a guest on his show in 2010. After the doctor said he was worried about the comedian, Kimmel began dieting. Having two protein shakes and a small dinner every day for eight weeks and later moving on to a 2,000 calorie-per-day regimen helped him drop 25 pounds quickly.
Nick Carter
The Backstreet Boys member lost 32 pounds over the course of a year after he stopped drinking and became sober. “Drinking caused weight gain but it also weighed down my mental state,” he told Today in an interview published on September 27, 2022. The singer also changed his diet to remove fast food while ramping up his exercise regimen to five days a week. The Backstreet Boy started out 2022 10 pounds lighter in an effort to get in the best shape possible for the band’s upcoming tour. Nick credited his weight loss to the Lite Boxer workout program in a January 28 Instagram post, noting, “I’m 10 lbs down and on the way.
Amy Schumer
Following her endometriosis surgery and liposuction, Amy shared an update with her fans and revealed her weight had dropped to 170 pounds. “I feel good. Finally. “Never thought i would do anything but talk to me after your uterus doesn’t contract for 2.5 years and you turn 40.