Looking to grow your fitness business online? Stop scrolling through cat videos and start studying the masters of fitness content creation. 👀

Fitness content is killin’ it on YouTube. In fact, a recent study found that 87.6% of people watch health-related content on YouTube, and 84.7% make decisions based on what they watch. 

Top creators have built million-subscriber communities and seven-figure businesses. And these aren’t just people doing jumping jacks in their living rooms! They’re savvy entrepreneurs who’ve cracked the code on audience engagement, content strategy, and brand building.

You can learn how to do it, too. 

As a personal trainer, you can learn valuable lessons about how these creators connect with their audiences, structure their content, and build loyal communities. Whether you’re launching your own YouTube channel or just want to understand what makes fitness content stick, these creators are writing the playbook in real-time. 

Check Out: The latest from the ABC Trainerize YouTube Channel

Ready to see who’s dominating the fitness space in 2025? Let’s break down the channels every trainer should be watching and learning from. 💪

*Please note that follower counts were accurate at the time of writing.

18 Most Popular Fitness YouTubers in 2025

We’ve done the heavy lifting for you, analyzing follower counts, engagement rates, and perceived credibility to compile this definitive list.

While we’ve organized these creators by their biggest strengths, most could easily dominate multiple categories—and that versatility is exactly what’s driving their massive success.

📝 Check Out: 8 of the Highest Paid Personal Trainers in 2025

Science-Backed & Educational Fitness YouTubers

The nerds are winning, and thank goodness for that. These creators prove that fitness content doesn’t have to choose between being smart and being popular.

Jeff Cavaliere (ATHLEAN-X)

14.1M subscribers | Joined 2006

Jeff turned his physical therapy background into YouTube gold by making complex anatomy accessible to regular gym-goers. His “face pulls for rear delts” videos have probably prevented more shoulder injuries than a lifetime of gym safety posters!

What trainers can learn: Credibility sells itself when you can explain the why behind each exercise. Jeff’s success shows that people crave education, not just entertainment.

📝 Read More: How to Monetize Your Business and Fitness Knowledge Online

Jeremy Ethier

7.21M subscribers | Joined 2016

Jeremy’s biomechanics content proves you can be incredibly smart without being incredibly boring. He takes complex movement science and packages it into actionable workout tips that actually work.

His rapid growth shows there’s huge demand for evidence-based content. Trainers who can bridge the gap between research and practical application have a massive competitive advantage. 💪

Greg Doucette

2.34M subscribers | Joined 2006

Greg’s no-nonsense approach to calling out fitness BS has earned him a cult following. His blunt style might not be for everyone, but his commitment to honesty resonates with people tired of fitness industry snake oil.

The lesson? Authenticity beats polish every time. Greg’s success proves that being genuinely helpful matters more than having perfect production quality.

Natacha Océane

 1.66M subscribers | Joined 2015

This biophysicist-turned-fitness creator destroys fitness myths with hard research. She’s built a devoted following by treating her audience like intelligent humans who can handle nuanced discussions about training and nutrition.

And although she’s taking a hiatus from YouTube, her library of fitness content proves you don’t need to dumb things down to build an audience. Smart people want smart content, and they’ll pay premium prices for trainers who can deliver it.

Abby Pollock

1.09M subscribers | Joined 2013

Abby applies her engineering background to fitness, creating incredibly practical content about how to train efficiently. She’s the queen of “work smarter, not harder” advice that busy people actually want to hear.

Her approach shows that unique perspectives create unique value. Think about it: what background or expertise do you bring that could set your content apart?

📝 Check Out: 3 Ways to Use YouTube to Build Your Online Training Business

Strength & Weight Training Fitness YouTubers

Strength training doesn’t have to be boring. These creators prove it. 

Tibo InShape

26.9M subscribers | Joined 2008

This French bodybuilder has cracked the code on making strength training genuinely fun to watch. His challenge videos and high-energy personality have built one of the largest fitness audiences on the platform.

The takeaway for trainers: Personality matters as much as programming, and energy is contagious. Tibo shows that people follow people, not just workout routines. 

Chris Heria

5.29M subscribers | Joined 2013

Chris made calisthenics cool again by focusing on bodyweight skills that make you genuinely athletic, not just muscle for show. His content brings together street workout culture with legit training principles—a true reflection of his Miami roots. 

His success highlights the power of niching down. Chris owns the calisthenics space and has built a community around it.

Lee Weiland

243K subscribers | Joined 2017

Lee’s content feels more like watching a Netflix documentary than a workout video. His production quality and clear instruction style represent the emerging premium tier of fitness content.

This shows where the industry is heading—clients expect more than clear workout instructions. They want higher production values and more thoughtful content creation. Trainers who can teach and entertain simultaneously will dominate their markets. 

📝 Read More: Using Content Marketing to Grow Your Fitness Business

Women’s Fitness & Empowerment Fitness YouTubers

These creators have built empires by understanding that women want more than just “bikini body” workouts.

Chloe Ting

25.8M subscribers | Joined 2011

Chloe’s home workout challenges have created a global fitness movement. Her “2 Week Shred” programs prove that you don’t need fancy equipment to build an engaged community.

The genius here is accessibility. Chloe removes every barrier to getting started—no gym, no equipment, no excuses. That’s a masterclass in meeting your audience where they’re at.

Sydney Cummings Houdyshell

2.02M subscribers | Joined 2016

Sydney’s journey from Division I track athlete to YouTube sensation shows the power of purpose-driven content. After losing her younger brother in 2017, she decided to create a fitness legacy that removes barriers to training.

The lesson for trainers: Personal stories create deeper connections than perfect abs ever will. Sydney’s transparency about loss, career changes, and chasing passion resonates because it’s real. Clients don’t just want your expertise—they want to know why you do what you do.

Heidi Somers (BuffBunny)

811K subscribers | Joined 2008

Heidi turned her YouTube success into a multi-million dollar fitness apparel brand. Her content mixes workout tips with lifestyle and business insights.

She’s proof that YouTube can be a launching pad for bigger business ventures. Smart trainers are already thinking about how their content can support multiple revenue streams.

Fun & Entertaining Fitness YouTubers

Sometimes the best workout is the one that doesn’t feel like work. These creators have mastered the art of making fitness genuinely enjoyable—and oftentimes, hilarious! 😂

Maddie Lymburner (MadFit)

10.6M subscribers | Joined 2018

Maddie has taken dance workouts up a notch by making them accessible anytime, anywhere. Her videos feel more like dance parties than exercise—perfect for people who dread traditional workouts (AKA me). 

The business lesson: Instead of just creating dance workouts, she reinvented how they should look and feel on YouTube. Her example just goes to show you don’t have to invent a completely new category to succeed online. Sometimes you just need to make it look and feel different than how others are doing it. 🙌

Browney

10M subscribers | Joined 2013

For this German creator, humor and fitness are a mad combo. His playful approach hooks younger audiences who typically scroll past traditional fitness content.

The lesson: Serious results don’t require serious content. So don’t be afraid to be playful! Browney shows that fitness content can be educational without being so serious all the time. 😉

Vladimir Shmondenko (ANATOLY)

8.56M subscribers | Joined 2022

This powerlifter’s prank videos—where he pretends to be a cleaner before deadlifting enormous weights—have gone massively viral. His content proves that surprise and skill create viral moments.

Surprise and entertainment value still rule YouTube. Vladimir’s genius lies in capturing attention first, then demonstrating credibility to sell training programs. Smart trainers can apply this by leading with personality before diving into technique.

The Fitness Marshall

6.93M subscribers | Joined 2014

Caleb’s dance cardio workouts are pure joy in video form! His infectious energy and body-positive messaging have created a community where everyone feels welcome to move their body, just as they are. 

It’s true: inclusivity and fun can be super effective business strategies. People want to feel good about fitness, not intimidated by it.

📝 Check Out: Fitness Content Creators: Tips and Tricks to Succeed

Yoga, Mindfulness & Holistic Wellness Fitness YouTubers

These creators get it: fitness isn’t just about crushing PRs or looking good in photos. It’s about feeling good from the inside out. 🧘‍♀️

Yoga With Adriene

13.3M subscribers | Joined 2012

Next, Adriene has basically become the internet’s yoga teacher, making yoga feel like hanging out with your most zen friend. Her “30 Days of Yoga” series quickly took off because she wanted more people to benefit from the power of yoga—whether or not they could attend in-person classes. 

The business gold here? She treats viewers like friends, not students. That personal connection has built incredible loyalty and trust with her massive audience. When people trust you, they’ll follow you anywhere.

Cassey Ho (Blogilates)

10.8M subscribers | Joined 2009

Cassey has turned Pilates into a full-on lifestyle brand, mixing workouts with fashion, food, and personal development. She’s one of the OG fitness YouTubers who’s stayed relevant for over a decade, which is no small feat! 💪

Her secret sauce? Constant evolution. She’s continuously expanding her content and business model to build entire ecosystems around her expertise. The lesson for trainers: think bigger than just workouts. 

SarahBethYoga

1.79M subscribers | Joined 2010

Next, Sarah has built her channel around the idea that yoga isn’t just about getting bendy—it’s about feeling better in every aspect of your life. Her flows combine physical practice with real talk about mental health and self-care.

What’s brilliant about her approach? She’s tapped into what people actually want: complete wellness, not just another workout. Sarah shows that the future belongs to trainers who understand fitness is just one piece of the puzzle. Mind, body, and spirit—that’s where the industry is heading. ✨

📝 Read More: Flow Like Never Before: Pilates & Yoga Exercises Are Now in the ABC Trainerize Library

What These Fitness Content Creators Can Teach You

After studying these top creators, several key patterns emerge that every trainer should notice:

 

Authenticity always wins.	Whether it’s Greg’s blunt honesty or Adriene’s friendly energy, people connect with real personalities.
Education sells when packaged right.	Jeff and Jeremy prove that smart content doesn’t have to be boring content.
Fitness is evolving beyond the physical.	The most successful creators build complete wellness ecosystems that address mind, body, and spirit.
Multiple revenue streams matter.	Top creators think bigger than just workouts, expanding into lifestyle brands, apparel, and comprehensive programs.
Community beats customers.	These creators treat their audiences like friends and communities, not just transactions.
Accessibility matters.	From Chloe’s equipment-free workouts to Adriene’s approachable yoga content, success comes from meeting people where they are.
Personality + expertise = magic.	The winning formula combines credible knowledge with engaging delivery.

Whether you’re ready to launch your own YouTube channel or just want to better connect with your current clients, these creators prove that success comes from being genuinely helpful while staying authentically you.

Ready to Take Your Fitness Expertise Online? 🚀

Finally, YouTube is just one piece of building a profitable fitness business. The real magic happens when you combine great content with the right tools to manage clients, deliver programs, and scale your impact.

ABC Trainerize gives you everything you need to turn your fitness expertise into a thriving business—from client management and workout delivery, to nutrition coaching and progress tracking. While you’re building your online presence, we’ll handle the backend so you can focus on what you do best: changing lives through health and fitness.

Start your free trial with ABC Trainerize today!