The death of Les Mills Sr. on June 29, 2026, marked the end of a man whose influence on the fitness industry can hardly be overstated. The former Olympian, entrepreneur, and longtime mayor of Auckland was 91 years old. Although his name is now inextricably linked to one of the world’s best-known fitness brands, his true legacy extends far beyond the commercial success of a single company.
Many developments that are taken for granted in gyms today can be traced, directly or indirectly, to ideas that Les Mills and his family shaped over decades. Professionally designed group fitness programs, standardized trainer training, scientifically grounded class concepts, and a globally consistent class experience—all of this has permanently transformed the industry.
A Vision Ahead of Its Time
When Les Mills opened his first gym in Auckland with his wife Colleen in 1968, the fitness world looked completely different from what it does today. Strength training was primarily reserved for competitive athletes, health clubs were rare, and group classes played only a minor role.
Les Mills, however, recognized early on that people are more successful in their long-term fitness journeys when motivation, community, and professional guidance come together. This conviction did not arise by chance. As a four-time Olympian in discus and shot put, he knew from personal experience the difference that qualified coaching and a motivating environment can make.
What began as a single studio eventually evolved into Les Mills New Zealand. The next generation later took the decisive step onto the international stage. His son, Phillip Mills, and Jackie Mills founded Les Mills International and, drawing on the studios’ experiences, developed a globally scalable concept for group fitness.
From the Aerobics Boom to a Global Quality Standard
While the fitness industry in the 1980s was heavily influenced by the aerobics trend, Les Mills International took a different approach. Instead of letting individual instructors design their own classes, the company relied on standardized programs with fixed choreography, carefully selected music, and scientifically developed training methods.
This concept was extraordinary at the time and went on to become a milestone for the entire industry. Today, programs such as BODYPUMP™, BODYCOMBAT™, BODYBALANCE™, RPM™, LES MILLS SPRINT™, LES MILLS CORE™, and LES MILLS GRIT™ are among the best-known group fitness formats worldwide.
Another key to its success is its high standard of quality. New releases are launched quarterly and are continuously refined by sports scientists, physical therapists, and international master trainers. This combination of exercise science, motivation, and entertainment has made the programs an international success story.
According to the company, Les Mills programs are now offered in more than 100 countries and reach millions of participants every week. This makes Les Mills International one of the world’s largest providers of licensed group fitness programs.
Why Les Mills Has Permanently Changed the Fitness Industry
The company’s influence extends far beyond its own programs. Les Mills played a decisive role in making group fitness a central component of modern fitness centers.
Today, high-quality class offerings are considered a key factor in member recruitment and long-term customer retention. Many gyms are making targeted investments in modern class studios, professional lighting and sound systems, and the ongoing training of their instructors —developments that have gained even greater significance due to the success of standardized programs.
The role of the instructor has also changed. Traditional exercise leaders have evolved into coaches who combine motivation, technical instruction, and a sense of community. This approach continues to shape group fitness to this day.
Digitalization as the Next Step in Development
Long before hybrid fitness offerings became an industry trend, Les Mills International was investing in digital training solutions. With LES MILLS+, the company now offers a platform through which members can complete numerous programs regardless of time or location.
Rather than replacing in-studio workouts, the company pursues what’s known as an “OmniFitness” approach: digital offerings and in-person training are designed to complement each other effectively and help people stay active in the long term.
Fitness as a Social Mission
For Les Mills, fitness was never solely a matter of physical performance. He viewed exercise as a social mission and as a way to enable people to lead healthier and more self-determined lives.
He summed up his philosophy in a single sentence: “The purpose of the gym is to help people fall in love with fitness.”
This philosophy continues to shape the company’s culture to this day and is likely one of the most important reasons the brand has remained successful for decades.
A Life of Responsibility
In addition to his work as an entrepreneur, Les Mills was also active outside the fitness industry. In the 1990s, he served several terms as mayor of Auckland and championed infrastructure projects and the city’s further development, among other causes.
For his achievements in sports, business, and public life, he received numerous honors, including the title of Member of the Order of the British Empire (MBE), later the Companion of the New Zealand Order of Merit (CNZM), and, in 2022, induction into the New Zealand Business Hall of Fame alongside Phillip and Jackie Mills.
Farewell to an Extraordinary Man
Following his father’s death, Phillip Mills paid tribute to his father’s life’s work with moving words: “My father was exceptionally strong, determined, and always had a deep compassion for those less privileged. He left a lasting impression on everyone he met. His spirit lives on in fitness classes around the world, inspiring people to embrace fitness.”
A Legacy That Endures
With the passing of Les Mills Sr., the fitness industry has lost one of its great pioneers. However, his true contribution cannot be measured solely by company figures or the number of international locations.
His greatest legacy is the transformation of an entire industry. He helped turn gyms into places where people don’t just work out, but also experience motivation, community, and a better quality of life. Many standards that seem self-evident today stem from ideas that Les Mills and his family developed and perfected over decades.
His name will continue to appear on class schedules worldwide. Above all, however, his philosophy will live on—wherever people train together, motivate one another, and discover how positively exercise can change their lives.
Editorial team at fitnessmarkt.de
Source and image source: Fitness-Experte AG
Published on: 6 July 2026