Evolving Concepts of Fitness: From Ancient Traditions to the Future

The idea of fitness has always reflected the era that shaped it. In ancient times, it was synonymous with survival. You needed strength to fight, endurance to hunt, and mobility to travel. Fitness was woven into daily life. No separation existed between function and effort.

During more peaceful and industrialized times, physicality became less essential. The aristocratic classes hired others to do manual labour. Comfort became a status symbol, and fitness drifted toward sport, recreation, or aesthetic pursuit. But it never disappeared. In fact, with each cultural shift, fitness reinvented itself.

In the late 19th and early 20th centuries, strength came roaring back. The strongman era captured public imagination; figures like Eugen Sandow performed feats of power that blended art and athleticism. In the 1970s, jogging became the new wave of cardiovascular health. The 1980s brought the rise of aerobics; group classes, leg warmers, and mass participation. Each decade found a new form of expression for the age-old pursuit of capacity.

Today, we’re seeing those threads woven together. Hybrid training is everywhere. One day you’re lifting heavy, the next you’re sprinting, and on the weekend, you’re lining up for a race that blends it all. Fitness is no longer one-dimensional. It’s not just strong or just lean. It’s capable. It’s adaptive. And it’s being tested in new arenas, including fitness races, obstacle challenges, and functional competitions that demand a wide range of skills.

These events don’t just ask, “Are you fit?” They ask, “How many kinds of fit are you?”

Technology has also joined the movement. Heart rate monitors, GPS trackers, sleep scores, and wearable devices provide us with more feedback than ever before. We measure our fitness in numbers now: pace, power, load, reps, distance. These metrics can be helpful. They give structure to the process. They make progress tangible. But they’re not the full story. They tell you what you did, not always how you did it, or why.

Still, modern data has helped us train smarter. We now understand the value of progressive overload. We are aware of the recommended training intensities and volumes that enhance health and reduce disease risk. We’ve come to realise that combining strength and endurance, once thought to cancel each other out, can actually produce superior outcomes when programmed intelligently. These findings are now reflected in the growing popularity of hybrid races, where competitors must move quickly, lift effectively, and endure discomfort across various domains.

Looking ahead, the tools will continue to evolve. We’ll see more integration between technology and training, including AI-generated plans, virtual race simulations, and perhaps even genetically informed programs. But the essence of fitness won’t change. The human body remains a complex biological system, not a machine. It thrives on effort. It adapts to stress. And it responds best to consistency, not shortcuts.

No matter how advanced the tools become, fitness will always be about one thing: using your body to engage with the world. To chase. To carry. To climb. To play. To persist. Fitness is what allows us to experience life more fully.

Because when you’re fit, you’re not just ready for a race.

You’re ready for anything.

Stoicus Esto

Jason Curtis

Jason Curtis

Jason Curtis is a leading strength and conditioning coach, former British Army physical training instructor, and bestselling author of numerous books on health, fitness, and sports performance. Based in the UK, he owns and operates a thriving gym, 5S Fitness, where he coaches athletes from all walks of life.

Jason is the founder of The SCC Academy, which has educated and certified over 35,000 fitness professionals and enthusiasts around the world. He also co-founded the CSPC, a specialist organisation dedicated to advancing the skills of combat sports coaches and athletes.

In the world of competitive fitness, Jason is best known as the founder of the Deadly Dozen—a global phenomenon that has redefined fitness racing, with hundreds of events hosted across multiple countries.

https://www.jasoncurtis.org
Previous
Previous

Fitness as Freedom

Next
Next

The Purpose of Training: Preparedness and Capability