Top 15 Fitness Influencers Essential for Collaboration in 2025

Top 15 Fitness Influencers Essential for Collaboration in 2025

In a way we have never seen before, fitness influencers are taking over Instagram feeds with everything from squats and green smoothies to downward dogs and toned abs.  Everyone wants to feel and look good, and fitness influencers are the ideal source of motivation for people who want to improve their health and fitness. 

Thanks to Instagram Reels and TikTok videos, it has never been simpler to locate exercise videos and fitness advice from your favorite lifestyle influencers or some more hardcore athletes. 

In this article, we will go through some of the best fitness influencers on each popular platform. It doesn’t matter if your business is active on Instagram, TikTok or YouTube. You will find the perfect match for collaborating here. Let’s start.

Top 15 Fitness Influencers in 2025

Our goal here is to categorize these top fitness influences into three groups: Instagram, TikTok, and YouTube. Let’s start with Instagram:

Instagram Fitness Influencers

Here are some of the top influencers active on Instagram that work in fitness:

1. Kayla Itsines (@kayla_itsines)

Kayla Itsines is one of the famous fitness influencers mainly for her Bikini Body Guides. Millions of people around the world have been motivated by her intense exercise routines. With inspirational fitness stories and useful training advice, her content is among the best on Instagram. As a mother of 2 children, Kayla can be considered a successful mom influencer as well as her fitness career. 

Collaborating with Kayla can expand the reach and legitimacy of your brand, especially in regions that emphasize transformative and high-intensity exercise. 

  • Niche: Fitness
  • Instagram Followers: 15.8 Million
  • Engagement Rate: 8.7%
  • Avg Likes per Post: 39,000

2. Jen Selter (@jenselter)

Jen is one of the NYC fitness influencers who motivates her fans every day with postings about lifestyle, fitness, and nutrition. Working at a nearby gym throughout her high school years marked the beginning of this influencer’s fitness career.

She has worked with a number of health and beauty companies, like Rebels Refinery and The Perfect Sculpt which shows the flexibility she has for collaborating.

  • Niche: Fitness, Lifestyle
  • Instagram Followers: 13.7 Million
  • Engagement Rate: 7.6%
  • Avg Likes per Post:

3. Joe Wicks (@thebodycoach)

Joe is a popular face in social media with more than 4 million Instagram followers and is a well-known fitness influencer. He employs High-Intensity interval training exercises as part of his fitness routine. Joe is famous for his positive attitude toward his followers which makes liking him much more easier. He may be found on @bodycoachapp, another Instagram account.

  • Niche: Fitness, Lifestyle
  • Instagram Followers: 4.8 Million
  • Engagement Rate: 3.6%
  • Avg Likes per Post: 8,680

4. Cassey Ho (@blogilates)

One of the popular fitness influencers on Instagram is the beloved Cassey Ho. The creator of POP Pilates and Blogilates, Cassey Ho, is famous for her fun and approachable exercise routines. 

Her devoted fan base adores her upbeat and welcoming approach to exercise. Cassey is a flexible partner for a range of fitness and health businesses because of her content, which covers wellness, lifestyle, and exercise. Her ability to provide interesting and instructive content guarantees that her fans are active participants in their fitness journeys rather than only passive watchers.

  • Niche: Fitness, Design
  • Instagram Followers: 3.1 Million
  • Engagement Rate: 1.4%
  • Avg Likes per Post: 42,680

5. Emily Skye (@emilyskyefit)

Emily Skye is one of the popular beauty influencers who is active in the fitness area as well. The beautiful fact about Emily is that she advocates for mental wellness while still being physically healthy. Her posts range from motivating her followers on body positivity and postpartum fitness to highly active exercise routines.

By collaborating with Emily, your business may reach a demographic that prioritizes mental and physical health.

  • Niche: Fitness, Family, Beauty
  • Instagram Followers: 2.6 Million
  • Engagement Rate: 3.3%
  • Avg Likes per Post: 15,000

TikTok Fitness Influencers

Now is time to go through some of the influencers active on TikTok:

1. GrowWithJo (@growwithjo)

One of the best TikTok fitness influencers active right now is Jo. She posts many content about her fitness routine and the food regime she uses. Jo also posts exercise videos and vlogs about her daily life. 

She incorporates a variety of musical genres, such as reggaeton and Afrobeats, into her exercises. This is what makes her unique in comparison with other influencers.

  • Niche: Fitness, Family
  • Followers: 2.9 Million
  • Engagement Rate: 4.3%
  • Avg Views per Video: 89,000
@growwithjo

master your momentum challenge starts today with your MASTER TEST 🔥 it’s not too late to join! Link in bio 👀 #workoutchallenge #growwithjo #workoutmotivation #weightloss #challenges #motivation

♬ Montagem Alucinante Critial – DJ papagaio & DJ JHG & Mc Vuk Vuk

2. Krissy Cela (@krissycela)

Krissy is a renowned fitness instructor and businesswoman who is famous for her creative training methods. She offers structured exercise plans and dietary advice for all fitness levels with compassion and a love of fitness. She uses up-to-date information to teach her audience about well-being, which integrates mental, physical, and emotional wellness.

  • Niche: Fitness
  • Followers: 1.2 Million
  • Engagement Rate: 4.36%
  • Avg Views per Video: 240,000

3. Erin Azar (@mrs.space.cadet)

Mrs. Space Cadet or Erin Azar, is a self-described “struggle runner” who talks about her running struggles and adventures. Her work is really appealing because of her open and funny attitude to fitness.

Erin’s friendly manner and genuine narrative can help your business connect with regular fitness fans. Regardless of where they are starting from, her content motivates her followers to begin and maintain their fitness goals.

  • Niche: Fitness, Running
  • Followers: 931k
  • Engagement Rate: 2.6%
  • Avg Views per Video: 39,000
@mrs.space.cadet

Formal check in! How is everyone who pushed those things off to the new year now that we’re in the new year? Shout out your favorite coping skills (healthy or “unhealthy” because we don’t judge here). #newyear #procrastination #copingskills

♬ original sound – Mrs. Space Cadet

4. Michelle Lewin (@michellelewin)

Michelle Lewin is a YouTuber, model, and fitness TikTok influencer from Venezuela. Her hourglass form, which she displays whenever she models, is what made her famous. Michelle is not an exception to the rule that models take good care of their bodies. She goes to the gym to take care of her physique and stay in shape. 

  • Niche: Fitness
  • Followers: 254k
  • Engagement Rate: 6.7%
  • Avg Views per Video: 67,800
@michellelewin

Jamás pensé que convertirme en madre me iba a sentir mas sexy y cómoda con mi cuerpo de nuevo. Aquí el resultado de haber entrenado y cuidándome con la alimentación durante todos estos años y durante mi embarazo. Ser madre es una de las experiencias más transformadoras de la vida. Trae consigo un amor profundo y un nuevo sentido de responsabilidad, pero también es un viaje que desafía el cuerpo, la mente y el espíritu. En medio de la alegría, muchas veces puedes sentir que has perdido partes de ti misma, que la persona que eras antes ha cambiado, o que tus sueños han quedado en pausa. Es importante recordar que, aunque tu rol como madre es increíblemente valioso, no define la totalidad de quien eres. Eres fuerte, capaz y tienes el poder de equilibrar tu vida como mujer, como profesional y como madre. La maternidad no es el final de tus sueños, sino el comienzo de una nueva etapa, una en la que puedes encontrar una versión más fuerte, más sabia y más resiliente de ti misma. Gracias @SURRACA por insistir hacer estas fotos increíbles.

♬ sonido original – michelle_lewin

5. Lauren Fisher (@lauren_fisherr)

Another famous fitness celebrity is Lauren, who competed in six CrossFit matches before starting her channel. Lauren engages with her fans by posting pictures from her life and trips in addition to her frequent posts about training. 

In addition to being well-known in the CrossFit community, Lauren is a skilled weightlifter who has competed professionally in many events.

  • Niche: Fitness, Weightlifting
  • Followers: 73k
  • Engagement Rate: 2.8%
  • Avg Views per Video: 10,000
@lauren_fisherr

I asked my husband if he wanted to go work out at 4pm on a Friday night and he said yes without a doubt. 😂 Our version of a perfect Friday night. 😅 Do you train with your significant other?? #marriedlife #fitness #fyp

♬ HEAVEN ON THIS EARTH – Forrest Frank & Torey D’Shaun

YouTube Fitness Influencers

YouTube is a great platform for influencers active in the fitness niche. This is because of the freedom of time and format of the platform. Here are some of the most famous fitness influencers on YouTube:

1. The Fitness Marshall (@TheFitnessMarshall)

Caleb Marshall, popularly known as The Fitness Marshall, is well-known for his enjoyable and successful dance-based exercise regimens. He has a devoted following because of his contagious enthusiasm and inclusive demeanor.

Many people, especially those who might find traditional workouts scary, find Caleb’s dancing workouts appealing. By collaborating with him, your company can connect with a varied and interested audience searching for fun ways to maintain their fitness.

  • Niche: Fitness, LGBTQ+
  • Subscribers: 6.7 Million
  • Engagement Rate: 14.3%
  • Avg Views per Video: 315,000

2. Jesse James West (@JesseJamesWest)

Jesse James West creates content that is both educational and incredibly entertaining by fusing humor and fitness. His unique style of fitness material makes him stand out and maintains his audience’s interest.

Jesse is a relatable and significant character because of his ability to combine humor and fitness. By collaborating with him, businesses can add an entertaining and captivating element to their environment, making fitness accessible and pleasurable for a wider range of people.

  • Niche: Fitness
  • Subscribers: 5.8 Million
  • Engagement Rate: 15.4%
  • Avg Views per Video: 1.7 Million

3. Chris Heria (@CHRISHERIA)

Chris Heria is an entrepreneur, fitness influencer, and creator of the brand and workout program THENX. His YouTube account, where he posts fitness-related videos and workout routines, helped him to become one of the most famous influencers on this platform.

  • Niche: Fitness
  • Subscribers: 5.1 Million
  • Engagement Rate: 12.8%
  • Avg Views per Video: 126,000

4. Simeon Panda (@SimeonPanda)

Simeon has more than 2 million YouTube subscribers and is a well-known fitness influencer. He is a fitness entrepreneur who is very popular for his character and high standards in promoting the sports fitness sector, in addition to his incredible physique.

He can be a great option for businesses that are active in the fitness area for collaborations.

  • Niche: Fitness
  • Subscribers: 2.8 Million
  • Engagement Rate: 9.7%
  • Avg Views per Video: 71,000

5. Massy Arias (@Mankofit)

Massy’s popularity can be attributed in part to her unique approach to fitness. She is renowned for finding a way to work out wherever she is, in addition to combining strength training, yoga, and cardio exercises. 

She engages her followers by providing adorable pictures of her daughter and asking them to share their own before and after pictures.

  • Niche: Fitness, Family
  • Subscriber: 1.2 Million
  • Engagement Rate: 2.8%
  • Avg Views per Video: 17,000

How to Collaborate With Fitness Influencers?

As we mentioned in the previous section, all the influencers named here have the potential to collaborate with brands. This is a huge opportunity for businesses active in the fitness area. To do this collaboration in the best way possible, companies must use the best platforms. And this is where Ainfluencer shines the most. 

ainfluencer homepage

Ainfluencer is a feature-rich, free influencer marketing tool. It gives you the option to filter influencers by follower count, country, influencer marketplaces, and many other criteria. Businesses will find it much simpler to choose the influencers they wish to collaborate with as a result.

Now let’s review some additional capabilities that Ainfluencer offers:

  • %100 Free: There is no cost associated with using Ainfluencer. 
  • Unlimited campaigns: Your campaigns have no restrictions at all and you can create an unlimited number of campaigns, and you may anticipate receiving analytics for them after they are completed. 
  • Escrow System: With the escrow payment system, you can be certain that you will only pay your influencer once you are happy with the final outcome. Businesses find it simpler to carry out their goals as a result.
  • Accurate Targeting: By allowing advertisers to target the right audience with precision, the platform ensures that campaigns are well-received by the target population.
  • Performance tracking: Brands can simply assess influencer performance and keep a careful eye on campaigns at the influencer or campaign level with the help of the data that Ainfluencer offers.
  • End-to-end Communication: Secure communication with your influencers without the need for an intermediary app.
  • Deep Analytics: Deep analytics are available on the platform for both campaigns and influencers which will help both sides to make better decisions.
  • Rating & Review System: Brands can review influencers’ past partnerships for better future collaborations.

FAQs

Now is time to answer some of the most common questions about fitness influencers on the internet:

1. How Do Fitness Influencers Make Money?

The main way for influencers to make money is through collaboration with businesses. Companies and corporations active in different niches search for relative influencers and make deals with them to promote their brand. This way, both sides will come out of the deal winner. 

2. How Much Money Do Fitness Influencers Make?

Fitness influencers typically make something between $500 to $10,000 for each sponsored post. Depending on the company and campaign details, top influencers with bigger fan bases and good interaction rates can fetch even higher payments—often more than $20,000 per post.

3. How Many Fitness Influencers Are There?

According to Futurfit, there are around 326,863 fitness influencers on YouTube and 232,502 on Instagram. On the other hand, at 9.3%, TikTok has the highest average interaction rate.

Conclusion

Fitness influencers are becoming more and more popular as people realize how important it is to be active and healthy. Therefore, we named some of the most successful and famous influencers active in this niche. All of the named athletes have the potential to be a big win for businesses that want to collaborate with them. Just remember that self-care and being healthy are going to be the main trends for the upcoming years.

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