20 Celebrities Who Are Fitness Obsessed — & Have the Bodies To Prove It

When it comes to fitness, it's hard to top how hard some of our favorite celebrities work, though we'll admit that getting — and staying — in shape is much easier for them than it is for most of us. After all, they have access to chefs, personal trainers, and all kinds of professional help. If only we had all those resources at our fingertips! Still, there are many stars who stay in peak shape for more reasons than just looking good for the cameras. Some of these celebs have made fitness an obsession.

There are stars like Khloé Kardashian who have created reality shows based on their passion for the gym (Revenge Body, of course), while others, including Mandy Moore, have really cool goals such as crushing impressive mountain climbs as their reason to stay fit. In the midst of it all, many of them like to show off their bodies to flaunt what they worked so hard for — and why shouldn't they?

Looking for a little inspiration to hit the gym? Maybe you'll find it in one of these 20 fitness-obsessed celebrities.

Jessica Simpson

After losing 100 pounds following the birth of her third child, Birdie, Jessica Simpson wasn't stopping there. According to People, Jessica works with celebrity trainer Haley Pasternak and combines a healthy diet filled with fiber, protein, and fat with 45-minute gym sessions and hitting her step goal of 12,000 steps every single day.

Khloé Kardashian

Between her frequent gym selfies on Instagram and her show Revenge Body, most Kardashian fans know that Khloé Kardashian has made fitness a major part of her life over the past several years. Her trainer recently shared her surprisingly simple workout routine with Poosh, which involves a lot of body weight exercises that anyone can do at home.

Ciara

In the past, Ciara and her trainer have shared the different fitness routines she's tried over the years, and they're all pretty intense (but that means she's seen some amazing results). Running on the treadmill, strength training, and rowing are all part of what she does to stay so fit.

Kate Hudson

Of course we'd expect the woman behind Fabletics to be into working out — and Kate Hudson looks good doing it. Those who follow her on Instagram know that she's often sharing videos of her workouts and stretches with her followers, and sometimes her daughter, Rani, even gets in on it with her.

Jennifer Lopez

After that Super Bowl performance in 2020, there was no denying that Jennifer Lopez's hard work in the gym has paid off.

"We mix some cardio, plyometrics, full body, core, and lower body into her workouts — they are very, very intense and she takes it very seriously, which is exciting for someone like me. You say, 'We're going to do this,' and she's like, 'Great!'" her trainer, David Kirsch, told Vogue in 2021. "Her workouts are fast-paced. She's very focused and high-energy."

Dwayne Johnson

Dwayne Johnson is a man who goes by the nickname The Rock, so are we really surprised that he's known for his giant muscles? Didn't think so. He's always sharing videos and photos from the gym on Instagram, and just by looking at him, it's easy to see how much he loves bodybuilding.

Channing Tatum

Channing Tatum is the object of a lot of celebrity crushes, and with abs like his, it's easy to see why. They don't come without a huge amount of effort, though; according to what his trainer told Men's Health Australia, Channing does a lot of circuit training, cycling, and swimming, both in the ocean and in the pool.

Gabrielle Union

Gabrielle Union spends a lot of time in the gym (and she's often joined by her husband, Dwyane Wade). As she told Women's Health, some of her favorite ways to stay fit are by doing cardio intervals and Pilates, and she's said that if she goes too long without working out, she feels like she's lost all her progress.

Zac Efron

Here's another celebrity with killer abs! Zac Efron's Hollywood trainer, Patrick Murphy, told Healthline that the actor's routine is intense, particularly when he was getting ready to star in Baywatch and was about to spend quite a lot of time being filmed with his shirt off.

"Efron's Baywatch movie training program was an ever-changing approach, involving full-body workouts, two-day splits, three-day splits, power training, strength training, stability and balance training, lifeguard training, hiking, biking, obstacle course training, and more," Patrick said.

Chrishell Stause

When Selling Sunset star Chrishell Stause isn't selling houses on reality TV, she's sweating it out in the gym. She does full-body workouts multiple times a week with her trainer, Ocho, and Chrishell has even shared videos from her fitness routine on Instagram. She must be exhausted!

Chris Hemsworth

We couldn't talk about fit celebrities without mentioning Thor himself, Chris Hemsworth — another Hollywood dude who's known for his giant muscles, both in his movies and off-screen. We can't deny that this guy is always looking good. (And his wife, Elsa Pataky, is pretty into fitness herself.)

Jennifer Aniston

A lot has been said about Jennifer Aniston's ultra-healthy diet, but she doesn't just rely on what she eats (or doesn't eat) to stay fit. In 2021, Jennifer shared a video of her home workout (dogs included) on Instagram, though we'll admit her home gym is a bit fancier than what most of us have going on in our basements!

Kim Kardashian

Much like her sister Khloé, Kim Kardashian has also become a big fan of the gym, which she combines with a clean-eating diet that means she's cut back significantly on her sugar consumption. "I work out about an hour-and-a-half every single day, heavy weights. I don't do a lot of cardio," she told E! News, via People.

Jason Momoa

Here's another celebrity famous for his bodybuilding. Aquaman star Jason Momoa loves to share his workouts online, and as his trainer has told Men's Journal, when he's gearing up to film a movie, Jason hits the gym hard, doing kettlebell workouts, medicine ball training, yoga, and more.

Jessica Biel

Jessica Biel shares her love of fitness on Instagram, but when she's not on social media, she's still working hard. We've seen her do cardio and plyometric training, and like most other celebrities, she also works with professional trainers. If only we could all be so lucky!

Carrie Underwood

Carrie Underwood has always been open about her love of fitness — but she definitely works hard. According to trainer Eve Overland, Carrie treats her workout time as self-care.

"Most commonly, we will work with opposing muscle groups, so she gets a lot of frequency with lower-body exercises without overworking it on any given day. This approach has contributed to her amazing strength as well as sculpted physique," Eve told Shape.

Halle Berry

Whether she's out and about or at home, actress Halle Berry has made it a priority to make fitness part of her life, as she told InStyle.

"I was a gymnast growing up and was physically active at a young age," she said. "At 22, I was diagnosed with diabetes, and it became critical for me to manage my nutrition and diet. It really transformed my life and taught me how valuable my body is."

Hilary Duff

Hilary Duff's trainer, Dominic Leeder, told Fox News that she likes to keep things interesting in the gym.

"Duff is a fan of variety in the gym, so every single training session was different," he said. "Each workout consisted of movements that focused on engaging her lower core muscles and involved a mix of cardio, high-intensity interval training, and resistance training."

Brie Larson

Captain Marvel is, of course, in awesome shape. In January 2022, Brie Larson shared her workout goals in a video on her YouTube channel, even demonstrating the way she does some of her favorite exercises. She uses a personal trainer, but she might have a future as one herself!

Mandy Moore

Mandy Moore, who is soon to be a mom of two, has a pretty healthy take on her fitness, as important as it is to her. (After all, she's hiked to Mount Everest base camp.)

"I've given myself a little bit of a pass to not be on my workout game as much," she told Bustle. "If I can go on a daily walk with the family, then I'm doing my part."