Instagram has become a central hub for fitness inspiration, motivation, and expert advice. With a multitude of fitness influencers sharing diverse content, it can be challenging to identify where to begin.
In this curated list, we highlight some of the leading Instagram fitness influencers who are making significant impacts in the fitness community. From bodybuilders to trainers, these individuals offer more than just workout tips—they are reshaping our approach to health and fitness in meaningful, lasting ways.
2025’s Fitness Game Changers
Let’s explore who stands at the forefront of this dynamic movement.
Granny Guns (Marlene Flowers)
Meet Marlene Flowers, affectionately known as “Granny Guns,” a testament to the adage that it’s never too late to transform your life. At 58, Marlene embarked on her fitness journey to address health concerns and an eating disorder. Fast forward to her mid-60s, and she’s a bodybuilding sensation, captivating audiences with her strength and determination.
Marlene’s social-first approach has garnered her a substantial following on Instagram, where she shares workout routines, motivational insights, and glimpses into her daily life. Her content resonates with a diverse audience, inspiring individuals across generations to prioritize health and fitness. Her authenticity and relatability make her a beacon of empowerment, challenging age-related stereotypes and proving that dedication knows no age limit.
Austin Keil
Austin Keil is a dynamic fitness influencer and software engineer whose journey from the British Virgin Islands to the tech hubs of the United States exemplifies dedication and versatility. With a background in computer science from UCLA and experience as a software engineer at Meta, Austin seamlessly blends his technical expertise with a passion for fitness.
On platforms like TikTok and Instagram, Austin shares engaging content that includes fitness routines, beauty tips, and comedic storytelling. His relatable and conversational style has attracted over a million followers on TikTok, creating a community that values both entertainment and practical advice.
Austin’s growth strategy centers on authenticity and consistent engagement. By sharing his personal fitness journey and insights from his professional life, he fosters a sense of trust and relatability with his audience.
Cass Martin
Cassandra “Cass” Martin stands as a prominent figure in the fitness industry, renowned for her bodybuilding prowess and social media influence. With a background in construction, Cass transitioned into fitness, bringing a work ethic that has propelled her to the forefront of the bodybuilding community.
Cass’s content is characterized by heavy lifting routines and a focus on strength training, shared across platforms like Instagram and YouTube. Her audience, exceeding 2 million followers on Instagram, is drawn to her authentic portrayal of the fitness lifestyle, encompassing both the challenges and triumphs.
Logan Copperwheat
Logan Copperwheat is a social media influencer known for his dynamic presence on TikTok, where he shares a mix of dance, lip-sync, and fitness-related content. With over 1.1 million followers, Logan has become a prominent figure on the platform. His background as a fitness trainer influences his content, blending entertainment with wellness, often featuring humorous skits and collaborations with friends.
Logan’s TikTok videos showcase his energetic performances to a variety of music, from Curtis Jackson II to Kanye West, with his signature cowboy hat becoming part of his recognizable brand. His engaging and relatable content, paired with consistent interaction with followers, has been key to his rapid growth.
Dalton Chandler
Dalton Chandler, a former baseball player from Seattle, Washington, has transitioned from his athletic career to embrace a vibrant and active lifestyle. After competing at the collegiate level for the University of Washington, he settled in Nashville, where his love for motorcycles, country music, and cowboy culture shines through in his content. Dalton’s lifestyle captures the essence of staying active while immersing himself in the rustic charm of country living, appealing to those who value balance and authenticity.
In addition to his engaging social media presence, Dalton co-hosts a lifestyle podcast with friends Fisher Perry and Luke Bowman. The podcast explores themes of personal growth, shared experiences, and navigating the ups and downs of life, offering inspiration for maintaining a dynamic and fulfilling lifestyle. With his blend of storytelling and relatability, Dalton inspires his audience to embrace an active, well-rounded approach to life.
Kayla Istines
Kayla Itsines is an Australian personal trainer and entrepreneur renowned for her “Bikini Body Guides” and the fitness app “Sweat with Kayla.” In 2018, she was named the wealthiest self-made female under 40 in Australia. Kayla’s content focuses on fitness and wellness, offering workout programs and nutritional advice. She engages with a global audience, particularly women seeking fitness guidance.
Kayla’s success stems from her effective use of social media platforms like Instagram and YouTube, where she shares workout routines, success stories, and motivational content, building a large and engaged community. Kayla has a background in personal training and has been recognized for her influence in the fitness industry. Developing the “Bikini Body Guides,” launching the “Sweat with Kayla” app, and being named the wealthiest self-made female under 40 in Australia are significant milestones in Kayla’s career.
Get exclusive insights into scaling influencer campaigns, creating intentional content, and redefini
Luke Hopkins
Luke Hopkins is a rising star in the fitness world, celebrated for his dedication to natural bodybuilding and his engaging online presence. At just 20 years old, he has already achieved the status of a Natural Pro Bodybuilder, a testament to his commitment and discipline. Luke’s journey from a gym beginner to a seasoned athlete is a source of inspiration for many aspiring fitness enthusiasts.
Beyond his impressive physique, Luke is a content creator who shares his fitness journey and daily life through various platforms. On YouTube, he offers a glimpse into his routines and experiences, providing valuable insights for those interested in bodybuilding and fitness. His TikTok presence further amplifies his reach, where he shares workout routines and personal stories, connecting with a broader audience.
Squat University (Aaron Horschig)
Founded by Dr. Aaron Horschig, Squat University has become a trusted resource for athletes and fitness enthusiasts seeking to improve their movement patterns and prevent injuries. As a physical therapist and strength coach, Dr. Horschig created Squat University with the goal of making cutting-edge injury rehabilitation and performance enhancement accessible to everyone.
The platform offers a range of educational tools, from in-depth articles and videos to live seminars and podcasts, all focused on helping athletes optimize their strength and mobility. With a focus on practical advice and evidence-based techniques, Squat University empowers individuals to move more efficiently, enhance athletic performance, and prevent injuries, making it an invaluable resource for anyone serious about fitness.
Simeon Panda
Simeon Panda is a powerhouse in the fitness industry, blending professional bodybuilding with entrepreneurial flair. Hailing from London, England, he began his fitness journey at the age of 16, driven by a desire to build strength and transform his physique. Over the years, Simeon has evolved into a well-respected figure, not only for his incredible physical achievements but also for his business ventures. He co-founded SP Aesthetics and Just Lift, two brands dedicated to promoting fitness and performance.
As a leading influencer, Simeon’s presence extends far beyond social media. He has earned a reputation as one of the top fitness influencers globally, using his platform to motivate millions. Whether sharing his rigorous training routines or offering insights into a balanced lifestyle, Simeon continues to inspire people to pursue their fitness goals and build a healthy, sustainable lifestyle.
Lucy Davis
Lucy Davis is a distinguished fitness coach and influencer, renowned for her holistic approach to health and wellness. As the founder and coach of MyCoach App, she empowers individuals to achieve their fitness goals through personalized training programs. Her dedication to promoting a balanced lifestyle has garnered her a substantial following across various platforms.
A prominent figure in the fitness community, Lucy is an athlete for both BPN Supplements and Gymshark, collaborating with these brands to inspire and motivate her audience. Her engaging content spans Instagram, TikTok, and YouTube, where she shares workout routines, nutrition tips, and personal insights, fostering a supportive community of fitness enthusiasts.
Lucy’s journey into fitness was influenced by her background as a competitive swimmer, where she experienced the pressures of the sport. This experience has shaped her philosophy of promoting a balanced approach to fitness, emphasizing the importance of mental well-being alongside physical health.
Join Forces with the Champions of Fitness
It’s no surprise that these fitness influencers have become leaders in their space—their fresh perspectives, engaging storytelling, and actionable fitness advice are delivered in the most relatable and inspiring ways.
Through strategic collaborations and innovative content, these creators demonstrate what it takes to motivate and engage audiences in the digital fitness landscape. Viral Nation bridges the gap between brands and influencers who not only have an impressive reach but also craft impactful narratives that truly connect with their followers.
Our diverse talent roster showcases our commitment to creativity, authenticity, and results-driven partnerships. If you’re ready to amplify your brand’s presence, explore how our influencer marketing services can help you craft standout campaigns that leave a lasting impression. Let’s create something extraordinary together!
