Expert article: cognitive restoration and nature bathing
Expert author: Prof. Mathew White
Sources: White MP et al. Spending at least 120 minutes a week in nature is associated with good health and wellbeing. Scientific Reports (2019). Li Q. Environ Health Prev Med (2010). Bratman GN et al. PNAS (2015).
The 120-minute study (White et al., 2019)
The study analyzed data from 19,806 participants, identifying a dose threshold for the benefits of nature exposure:
- People spending at least 120 minutes per week in nature report significantly higher health and wellbeing levels.
- The 120-minute threshold is effective regardless of distribution (one 2h session or multiple short exposures).
- The benefit is independent of the associated physical activity.
Shinrin-yoku and immunity (Li, 2010)
Dr. Qing Li's work on "forest bathing" demonstrated that forest immersion (2 hours of slow walking with open sensory attention) increases Natural Killer (NK) cell activity by 50% for 7 days post-exposure.
Rumination and nature (Bratman et al., 2015)
Bratman et al. (2015) compared 38 participants walking 90 minutes either in a natural environment or an urban environment. Findings showed a significant reduction in self-reported rumination and subgenual prefrontal cortex (sgPFC) neural activity only in the nature group.
Application in Deuswell
Deuswell's Nature module tracks the user's weekly nature dose and recommends sessions to reach the 120-minute threshold identified by White et al. (2019). A "silence" mode is available with a simple timer and vibration phase-change reminders.
