What is Forest Bathing? A Beginner's Guide

What is Forest Bathing?

Forest bathing, forest therapy, or Shinrin-yoku in Japanese, is the practice of immersing yourself in the atmosphere of the forest using all your senses. It's not about hiking, exercising, or reaching a destination but about slowing down, being present and allowing nature to do the heavy lifting, and work its magic on your body and mind.

 

The Science Behind Forest Bathing

What began as a public health initiative in Japan in the 1980s to combat Karoshi (death by overwork) has since been confirmed by decades of peer-reviewed research. Scientists have discovered that time spent in forests triggers measurable physiological changes that promote healing and wellbeing.

 

Phytoncides: Nature's Invisible Medicine

Trees and plants emit aromatic compounds called phytoncides, natural oils that protect them from insects and decay. When we breathe in these compounds during forest bathing, they interact with our immune system in remarkable ways. Mostly being emitted from the leaves and bark, phytoncides are more prevalent in warmer months than colder, but they are to be found in certain essential oils, such as Spruce, Pine, Eucalyptus, Cypress and Oak.

Research led by Dr. Qing Li at Nippon Medical School found that phytoncides increase the activity of natural killer (NK) cells—white blood cells that play a crucial role in fighting infections and cancer. A single forest bathing session can boost NK cell activity by up to 50%, with effects lasting for up to 30 days.

 

Stress Reduction and the Nervous System

Forest environments activate our parasympathetic nervous system, the "rest and digest" mode that counteracts chronic stress. Studies measuring physiological markers have shown that forest bathing:

• Reduces cortisol (the primary stress hormone) by an average of 12.4%
• Lowers blood pressure and heart rate
• Decreases sympathetic nervous activity (the "fight or flight" response)
• Increases parasympathetic activity, promoting relaxation and recovery

A 2010 study published in Environmental Health and Preventive Medicine compared urban walking with forest walking and found significantly lower cortisol levels, pulse rate, and blood pressure in the forest group—even after just 15 minutes.

 

Mental Health and Cognitive Benefits

Beyond physical health, forest bathing has profound effects on mental wellbeing. Research shows it can:

• Reduce anxiety and depression: A meta-analysis of multiple studies found consistent improvements in mood states and reductions in anxiety scores
• Improve focus and attention: Natural environments restore directed attention, reducing mental fatigue
• Enhance creativity: Time in nature has been shown to improve creative problem-solving by up to 50%
• Support trauma recovery: The gentle, non-threatening environment of the forest can help regulate the nervous system in those healing from trauma

I know from my own experience that this is true. Forest Therapy is been huge on my recovery through trauma, and a little time in the woods always helps me focus more on the next task.

 

The Role of Sensory Engagement

What makes forest bathing particularly effective is the multi-sensory experience. The Japanese practice emphasizes engaging all five of the most common senses:

• Sight: The colour green and fractal patterns in nature reduce mental fatigue
• Sound: Natural soundscapes (birdsong, rustling leaves, flowing water) lower stress and improve mood
• Smell: Phytoncides and earthy scents trigger the limbic system, influencing emotion and memory
• Touch: Physical contact with natural materials (bark, moss, soil) grounds us in the present moment
• Taste: Mindfully tasting wild edibles or simply breathing forest air connects us to place

In one of our guided Forest Therapy sessions, I always begin with a grounding meditation to connect you with all of your senses, not just the five we know the best.

 

How Long Do the Benefits Last?

One of the most encouraging findings is the lasting impact of forest bathing. While a single two-hour session provides immediate benefits, regular practice compounds the effects:

• Immune system benefits can persist for up to 30 days after a single forest visit
• Weekly forest bathing sessions show cumulative improvements in stress resilience
• Long-term practitioners report sustained improvements in sleep quality, mood, and overall vitality

Forest Bathing in the British Landscape

While the research originates in Japan, the benefits translate beautifully to our British woodlands. Ancient oak forests, beech groves, pine plantations and even urban green spaces offer therapeutic potential. Here in Lancashire, our native trees oak, ash, birch, beech, hawthorn and even alder, produce their own unique blend of phytoncides and seasonal rhythms.

 

Getting Started with Forest Bathing

You don't need special equipment or a distant wilderness. Start with:

• A local woodland or park
• Two hours of uninterrupted time
• A willingness to slow down and notice
• All five senses awake and receptive

The science is clear: our bodies are designed to thrive in relationship with the natural world. Forest bathing is simply a return to what we've always known, that nature heals.

If you'd like to experience guided forest therapy in Lancashire, explore our sessions designed to help you reconnect with nature in a safe, supportive environment.