How nature nurtures: How a One-Hour Walk in Nature Can Calm Your Mind, Amygdala activity decreases as the result.

Urban life, despite its advantages, can take a toll on our mental health. Living in densely populated environments correlates with an increased risk of anxiety, depression, and severe mental disorders like schizophrenia. The reason is partly physiological: our brains process urban stimuli as threats, activating the amygdala, the brain's center for fear and stress responses. Studies show that stress-related brain regions are more active in city dwellers during social stress tests than in rural residents, suggesting that constant urban stress may “over-train” the amygdala, leading to heightened vigilance and anxiety over time.

During the COVID-19 lockdowns, however, many were deprived of these benefits as outdoor activities were severely limited due to government mandates and outdoor public park restrictions. Isolation, reduced exposure to fresh air and sunlight, and restricted movement created a "secondary epidemic" of mental health issues, including increased rates of anxiety and depression. This enforced separation from nature underscored just how critical outdoor access is to mental health, amplifying issues across many demographics.

However, research reveals that time spent in nature can reverse this trend. A recent study examined brain activity before and after participants took a one-hour walk—some in an urban environment and others in a forested area. The findings showed a significant reduction in amygdala activity for those who walked in the forest, with no change observed after the urban walk. This decrease in amygdala activity suggests that nature exposure may reduce our baseline stress, allowing the brain to “reset” from urban-induced overstimulation.

Psychologist Stephen Kaplan's Attention Restoration Theory (ART) adds context to why nature is particularly effective in this regard. Kaplan proposes that nature provides restorative effects because it meets four specific conditions needed for mental recovery: compatibility, being away, extent, and soft fascination.

1. **Compatibility**: For nature to provide true restoration, it must be aligned with the individual's goals and comfort. Someone afraid of wild animals, for instance, may not find peace in deep wilderness, but a riverside walk might feel supportive and welcoming.

2. **Being Away**: Nature allows for a sense of psychological and sometimes physical removal from daily pressures, creating mental space to relax. Stepping out of the city’s demands creates an opportunity for the mind to break free from urban stressors.

3. **Extent**: Environments with open landscapes and vast natural scenes engage our minds both physically and conceptually, offering a setting in which we feel free to wander. This gives the brain room to breathe, helping reduce mental clutter.

4. **Soft Fascination**: Natural environments provide visual and sensory stimuli that capture our attention without overwhelming us. Soft, repetitive sights and sounds, like leaves rustling or water flowing, engage our involuntary attention without requiring effort, allowing directed attention (used in focused tasks) to rest and recharge. This is why quiet forests, meandering rivers, or even a cloud-filled sky feel calming.

These criteria make nature uniquely capable of recharging our minds, far beyond what traditional relaxation can offer. For example, directed attention—the mental resource used for tasks requiring focus—benefits most from time spent in a natural setting, as it’s allowed to rest while our senses are gently engaged in non-demanding ways. The Stress Recovery Theory (SRT) supports ART by highlighting that nature exposure not only restores cognitive resources but also fosters positive emotions while reducing arousal and negative emotions, such as stress and fear.

However, achieving these mental health benefits isn’t automatic. The wilderness, while therapeutic, requires a degree of logistical awareness, safety, and navigation that can actually prevent the mind from fully relaxing when undertaken alone or by someone inexperienced. Those looking to experience these mental health benefits, hiring an experienced guide can make the process both enriching and safe. A guide can select areas aligned with Kaplan’s restorative criteria, increasing the likelihood of reaching a state of mental restoration. At A.C.E. Expeditions, our guide create supportive experiences by tailoring outdoor adventures to individual comfort levels and goals, whether that’s a quiet nature walk or a deep wilderness exploration. With logistical and safety concerns managed, participants can stay fully present, engaging with nature in a way that lowers stress and promotes mental clarity, benefiting both the mind and body.

Having an experienced guide from A.C.E. Expeditions alleviates the cognitive load of managing safety and direction, allowing participants to truly immerse themselves in nature without distraction. By handling everything from route-finding to risk assessment, our guides create an environment that meets every condition for optimal mental restoration.

At A.C.E. Expeditions (Adventure, Capture, Evolve), our guided experiences seamlessly blend adventure with expert guidance, allowing guests to engage with the landscape worry-free. This empowering experience captures the essence of the journey, while equipping participants with skills for future adventures. With A.C.E., each trip becomes a stepping stone towards greater mental clarity, independence, and confidence, evolving the way you connect with the natural world.

References: McDonnell, A. S., & Strayer, D. L. (2024). Immersion in nature enhances neural indices of executive attention. Scientific Reports, 14(1). https://doi.org/10.1038/s41598-024-52205-1

Sudimac, S., Sale, V., & Kühn, S. (2022). How nature nurtures: Amygdala activity decreases as the result of a one-hour walk in nature. https://doi.org/10.31234/osf.io/tucy7