When nature regulates us – An Evolutionary and Nervous-System Perspective
In my previous writing, When Nature Regulates Us, I shared a personal experience. When life became unstable, nature somehow made my nervous system calmer. At that time, what felt intuitive, almost accidental. Later I understood: this experience is deeply biologically rooted.
To understand why nature soothes us, we need to look at where our nervous system actually comes from.
An evolutionary mismatch
For more than 99% of human history, people lived in natural environments. Forests, open land, changing light, seasons, wind, uneven ground. Our nervous system learned safety and danger from these surroundings. From horizon, from sounds, from movement, from patterns in nature.
From an evolutionary perspective cities are very new. Traffic noise, artificial light, straight lines, constant notifications, visual overload — these were never part of the environment our nervous system was shaped for. Even when nothing bad is happening, urban environments often keep the nervous system in a mild state of alert.
Nature does the opposite.
It sends signals of safety that our nervous system understands without thinking.
Why nature soothes the nervous system
Research suggests several mechanisms working together:
- Rhythmic sensory input like wind, water and birds supports nervous-system regulation
- Natural fractal patterns are easier for the brain than sharp urban geometry
- Natural light helps regulate circadian rhythm and hormones
- Biodiversity and open views reduce vigilance and mental looping
- Uneven terrain and natural movement bring attention back into the body
Together, these signals gently move the nervous system out of fight-or-flight and toward rest-and-digest.
What the research shows
Research shows that immersive nature exposure has measurable benefits.
According to Park B. J. et all (2010) Shinrin-yoku (forest bath) results a more relaxed physiological state, measured as lower level of cortisol, pulse rate and blood pressure, greater parasympathetic nerve activity, and lower sympathetic nerve activity than do city environments.
Exposure to natural light–dark cycles realigns human circadian rhythms, minimizing clock delay seen in artificial lighting environments and improving sleep timing. (Wright, K. P. Jr., et al. (2013)).
According to Bratman & Hamilton et all. (2015) 90 mins walk in nature significantly reduced rumination, a maladaptive pattern of self-referential thought that is associated with heightened risk for depression and other mental illnesses. Another study shows that subjects felt more comfortable, soothed and refreshed when viewing a forest landscape than an urban one. (Lee et all (2009).
These effects are stronger in real, immersive nature than in small, traffic-heavy urban green spaces.
Nature acts as an external regulator
Nature does not solve our problems, but it helps regulate the system that carries them.
This is also our first step when someone enters Therapeutic Coaching, help the nervous system to regulate better.
When our internal regulation is depleted, nature offers rhythm, structure and safety from the outside.
In a world that constantly pulls us out of rhythm, nature quietly brings us back.
Sometimes regulation does not come from effort or insight —
but from remembering where we come from.
Key Research References
- Bratman, G. N., Hamilton, J. P., & Daily, G. C. (2015). PNAS, 112(28), 8867–8872.
- Park, B. J., et al. (2010). Environmental Health and Preventive Medicine.
- Lee, J., et al. (2011). Scandinavian Journal of Forest Research.
- Wright, K. P. Jr., et al. (2013). Current Biology, 23(16), 1554–1558.