Feel foggy, tired or stressed? nature is the ultimate reset

Why walking in nature is more than just “nice”, it’s essential for your brain and body

Taking a walk in nature isn’t just a pleasant weekend activity. It’s a powerful tool to boost productivity, reduce stress, and support long-term brain health.

Let’s go through some of the benefits of being in nature on a regular basis.

Short-term benefits

Walking in nature provides a “reset” for the brain when you have been focusing on tasks during the week that require heavy amounts of concentration:

• Breaks the cycle of mental fatigue
  Concentrated cognitive tasks (such as work) drain your energy quickly. Nature provides what’s known as “soft fascination” which means it gently holds your attention without effort, allowing your brain to rest and recover.

• Reduces stress and improves cognition
  Natural environments reduce frontal lobe activity, helping to lower stress while restoring your cognitive reserves.

• Promotes brainwave activity linked to memory
  The rhythmic pace of walking naturally promotes Theta brainwaves (7–8Hz), which are associated with enhanced memory and learning.

• Boosts mood through nature’s nutrients
  While walking, you absorb aeronutrients, compounds that supplement your intake of manganese, vitamin A, B12, iodine, and essential fatty acids. If you’re near water, even better. Light reflecting off its surface stimulates serotonin, a hormone that regulates mood and promotes wellbeing.

Long-term benefits

Spending time in nature doesn’t just help in the moment, it strengthens your brain long into the future.

• Supports memory through scent-based stimulation
  Plants and sea air release volatile organic compounds (VOCs) that activate the olfactory nerve, the smell centre that links directly to the brain’s memory and language pathway (the uncinate fasciculus). This pathway tends to deteriorate with age and is linked to dementia.

• Odour exposure can improve cognition
  Studies show that smelling 40 different pleasant odours per day can improve memory, reduce dementia symptoms, and stimulate key areas of the brain.

• Enhances gene expression for overall health
  Olfactory enrichment (smelling a variety of scents) can influence gene activity related to anti-tumour function, inflammation reduction, and metabolic health.

Where to walk and for how long: what the research recommends

Not all walks in nature are created equal. Therefore, if you want the best results, choose the right environment, and don’t overthink it.

• Look for “mid-fractal” landscapes
  These are natural environments with a balanced level of visual complexity, not too chaotic, not too simple. For instance, think savannah-style scenery: open spaces with scattered trees and natural textures. These patterns are known to promote alpha and beta brainwaves, which increase calmness and focus.

• Just 20 minutes is enough
  A short walk in a natural setting is all it takes to reduce cortisol (stress hormone) levels, calm the planning centre of your brain (prefrontal cortex), and give space for meaningful reflection

So, whether you’re after a quick reset or working to protect your brain for the long haul, walking in nature is a simple, science-backed strategy that can make a meaningful difference.

Remember, if you’re feeling mentally fried or overwhelmed… step outside. Your brain will thank you.

Reference:

Thomson H (2025) Take a hike New Scientist, 3rd May 2025 (3541), p.38-41

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