For the vast majority of human history, there was no distinction between where humans lived and where nature was.
We did not visit nature. We did not retreat to it at weekends or seek it out for its wellbeing benefits. We were inside it, always — sleeping with the rhythms of light and dark, moving through seasons that shaped our energy and our appetite and our rest, drinking from rivers and eating from the earth and building our shelters from whatever the land provided.
Nature was not a backdrop to human life. It was the medium in which human life was entirely immersed.
That changed, in the sweep of human history, extraordinarily recently. The industrial revolution began concentrating populations in cities less than three hundred years ago. The modern indoor, screen-lit, climate-controlled, artificially illuminated life that most of us now inhabit is, in evolutionary terms, not even a blink. Our bodies have not changed.
Our nervous systems have not adapted. Our biology is still running ancient code, looking for signals from the natural world that are simply no longer arriving.
And we wonder why so many of us feel vaguely, persistently, inexplicably unwell. Disconnected from the type of aliveness and vibrancy that we are fast forgetting is possible for us.
What separation from nature actually costs
The evidence for what happens to human health in the absence of nature is no longer fringe research. It is substantial, consistent, and increasingly difficult to ignore.
Spending time in natural environments measurably reduces cortisol — the body’s primary stress hormone. It lowers blood pressure and heart rate. It supports immune function through exposure to phytoncides — the organic compounds released by trees and plants that activate natural killer cells in the body. It improves sleep quality by recalibrating the circadian system to natural light cycles. It reduces symptoms of anxiety and depression in ways that have been replicated across multiple studies and populations.
In Japan, the practice of Shinrin-yoku — forest bathing — has been the subject of serious scientific research for decades, with findings consistent enough that time in natural environments is now formally recommended as part of preventive healthcare. Not as a pleasant optional extra. As vital to real longevity and wellbeing.
But the cost of separation from nature runs deeper than the physiological. It runs to something in how we understand ourselves and our place in the world. There is a quality of perspective that nature provides — a recalibration of scale that reminds us, in the most visceral way, that we are not the centre of everything. That the world is older and larger and more intelligent than our current preoccupations suggest. That the problems constantly filling our minds, in the context of a forest that has stood for three hundred years, are genuinely small.
That perspective is not nihilism. It is relief. And it is increasingly unavailable to people who spend their entire lives inside.
But you do not need a research paper to confirm what your body already understands do you? You have felt it yourself — the particular quality of ease that floods back the moment you are standing in a forest, or watching the ocean move, or feeling the earth under bare feet. A sunrise. A sunset. The wind in trees. These are not pleasant extras. They are the body coming back online. The medicine is unmistakable because your nervous system needs it.
The body recognises what the mind has forgotten
Here is something we have both observed in ourselves — we are complete barefoot, tree-hugging hippies and proud of it — and those around us.
Bring someone into contact with natural materials — wood, stone, living plants, natural light — and something in them settles. Not dramatically, not with explanation, but noticeably. The shoulders drop slightly. The breathing slows. The quality of presence shifts. It is as though the body recognises something the mind has not consciously registered — a signal it has been waiting for, a frequency it understands at a level that precedes language.
This is not mystical. It is biological. The human body evolved in relationship with the natural world across hundreds of thousands of years. The sights and sounds and textures of natural environments are not neutral stimuli. They are meaningful to the nervous system in ways that synthetic environments are not and cannot be.
We did not choose to be this way. We were made this way. And the modern world, for all its extraordinary achievements, has not provided an adequate substitute for what it has tried its hardest to replace.
Why we built the way we did
When we began visioning and then designing Sanctuary, we made a decision early that shaped everything that followed. But perhaps the decision that preceded all others was where we chose to build our lives. We live on the Penarth coast because we are not people who function well apart from nature — it is, to us, as fundamental as the air we breathe. The sound of birds. Wind moving through trees. The ability to put our feet on the earth. The sea within reach. These are not luxuries for us. They are necessities. And they are the reason a space built around the human need for nature felt not like a concept but like the only honest thing to build.
We would not build a gym that happened to have some plants in it. We would build a space in which nature — its materials, its textures, its quality of light, its living presence — was as central to the experience as anything that happened inside it.
Biophilic design is the formal name for this approach — the intentional integration of natural elements into built environments in ways that support human health and wellbeing. The research behind it is compelling and growing. But we were not drawn to it primarily through research. We were drawn to it because it aligns with everything we believe about what the body needs and what genuine restoration actually requires. It is who we are as people.
The natural materials throughout the space are not an aesthetic choice. They are a physiological one. The textures are deliberate and varied — warm wood alongside cool stone, rough natural surfaces beside smooth ones — because the body reads contrast as aliveness. A space that is entirely uniform, however beautiful, asks nothing of the senses. A space that offers variety — that asks your hand to feel the difference between materials, that moves your eye between light and shadow — is a space that keeps the nervous system gently, pleasurably awake to the present moment. That quality of sensory presence is itself a form of restoration.
The plants have been chosen not only for their living presence but for their specific capacity to filter and clarify the air — removing toxins, increasing oxygen, and creating the particular quality of atmosphere that research consistently associates with reduced stress and improved cognitive function. In a world where most of us spend over ninety per cent of our time indoors breathing recycled air, this is no small thing.
The attention to natural light — its quality, its direction, its movement through the space across the day — is not incidental. It is one of the most fundamental signals the human circadian system uses to regulate itself. Different areas of the space hold the light differently at different hours, and that variation is intentional. The body responds to light as information.
Every element of the environment has been considered through a single question: does this support the body’s return to its natural state of ease and balance?
Coming home to the natural world
The disconnection most of us are living inside is not simply a consequence of too much screen time or too little sleep or the relentless pace of modern life — though all of those things are real and significant. At its deepest level, it is the consequence of having lived, for several generations now, almost entirely severed from the natural world that formed us.
Our classes and events at Sanctuary are created with a deep awareness of seasonal rhythms that most wellness spaces ignore entirely. The year has a natural arc — the expansive energy of spring and summer, the turning inward of autumn, the deep restoration that winter asks of us — and a timetable that honours that arc looks different in January than it does in June. We are not the same beings across the seasons, and our movement and our practice and our community gatherings should reflect that rather than pretend it is not so.
We are of course not able to bring the natural world in its fullness inside four walls. No built environment can fully replicate what exists outside it. But we can honour it. We can design spaces that speak the language of nature closely enough that the body hears something familiar.
We can remind people, through their daily experience of moving through the space, that they are not separate from the natural world.
And that is important.
Cora and James
Sanctuary Penarth