Habit
Regular outdoor exposure supports light entrainment and mental well-being.[1700,2611,3053, etc.]
Superscript reference numbers link to the Sources bibliography.
Composite Rating
Blends evidence depth, community direction, safety friction, and completeness.
Evidence Intensity
100/100
High depth from human/RCT/meta counts
Community Direction
0
Mixed / Neutral • confidence Minimal
Safety Friction
59/100
Moderate signal from adverse/interaction markers
Data Completeness
100%
Studies 24 • mentions 0 • links 38
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Classification: add.[1073,1191,1700, etc.]
Best fit: Users with high indoor time and low natural-light exposure..[1073,1191,1700, etc.]
Goal alignment: Mood, Stress Resilience, Sleep, Energy.[1073,1191,1700, etc.]
Classification
Add
Evidence Tier
MEDIUM
Best Fit
Users with high indoor time and low natural-light exposure.
Primary Focus
Mood, Stress Resilience
Clinical Depth
Humans: 279 • RCTs: 8 • Meta: 8
Cohort / Real-World
Cohort signals: 62
Safety Markers
Adverse signals: 4 • Interactions: 0
Freshness, trend, and study timeline for this item
Status
Trend
→ Stable evidence base
Depth
279 total studies · 9 recent
Timeline
Total indexed
279
Human studies
279
Neuropsych signals
110
Cohort signals
62
Sleep signals
18
Cardiometabolic signals
17
Weighted direction score: 0 (Mixed / Neutral)
High when replicated human meta-analysis/trial/cohort depth is present for the habit or exposure.
Total indexed
279
Human studies
279
Neuropsych signals
110
Cohort signals
62
Sleep signals
18
Cardiometabolic signals
17
Randomized trials
8
Meta-analyses
8
Dependency signals
5
Safety adverse signals
4
Animal-only studies
0
Distribution of evidence by study design strength
Evidence Strength: High
PMID 41080844 • 2025
Effects of urban green exercise on mental health: a systematic review and meta-analysis.
Frontiers in public health
Open PubMedPMID 37268208 • 2023 Aug 15
Green space exposure on depression and anxiety outcomes: A meta-analysis.
Environmental research
Open PubMedPMID 36361386 • 2022 Nov 4
Restorative Effects from Green Exposure: A Systematic Review and Meta-Analysis of Randomized Control Trials.
International journal of environmental research and public health
Open PubMedBenefit reports: 0
Adverse reports: 0
No-effect reports: 0
Mixed reports: 0
Unclear reports: 0
Signal confidence: 0.00
Benefits
Adverse
No Effect
Community confidence 0.00 with mentions: benefit 0, adverse 0, no-effect 0.
Search fetch failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=8&q=%22daily%20outdoor%20time%22%20(exercise%20OR%20training%20OR%20sleep%20OR%20habit%20OR%20side%20effects%20OR%20experience%20OR%20results)%20(subreddit%3AFitness%20OR%20subreddit%3Abodyweightfitness%20OR%20subreddit%3Aweightroom%20OR%20subreddit%3Arunning%20OR%20subreddit%3ACycling%20OR%20subreddit%3Aswimming%20OR%20subreddit%3AHIIT%20OR%20subreddit%3Ayoga%20OR%20subreddit%3Abiohackers%20OR%20subreddit%3Alongevity%20OR%20subreddit%3Ameditation%20OR%20subreddit%3Asleep%20OR%20subreddit%3Astopsmoking%20OR%20subreddit%3Astopdrinking%20OR%20subreddit%3Aleaves%20OR%20subreddit%3Adecaf%20OR%20subreddit%3Adecidingtobebetter)
aggregate • unclear
No directional first-hand mentions captured in the current community corpus; source links are retained for traceability.
Open mentionEvidence Sources
PUBMED • Human lifestyle/habit literature
Counts from structured habit/exposure PubMed query set.
Outcome: Humans 9, RCT 1, meta 0, cohort 4, sleep signals 2, cardiometabolic signals 0.[1700,2611,3053, etc.]
Open sourcePUBMED • 2018 • PubMed indexed study
PMID 30006211 from Arch Gerontol Geriatr.
Outcome: See linked record for design and specific outcomes.[, etc.]
No directional mention volume was resolved; fallback profile metadata is shown in other sections.
In vitro / tissue
0
Composite of study volume, RCTs, and meta-analyses
PMID 39209768 • 2024 Dec
How Does Nature Exposure Affect Adults With Symptoms of Mental Illness? A Meta-Analysis.
International journal of mental health nursing
Open PubMedPMID 34299932 • 2021 Jul 13
Is Brief Exposure to Green Space in School the Best Option to Improve Attention in Children?
International journal of environmental research and public health
Open PubMedPMID 38821342 • 2024 Sep 1
Nature exposure and mental health during the COVID-19 pandemic: A Navigation Guide systematic review with meta-analysis.
Environmental pollution (Barking, Essex : 1987)
Open PubMedPMID 33500323 • 2021 May
Green spaces, subjective health and depressed affect in middle-aged and older adults: a cross-country comparison of four European cohorts.
Journal of epidemiology and community health
Open PubMedPMID 31818476 • 2020 Apr
Influence of residential land cover on childhood allergic and respiratory symptoms and diseases: Evidence from 9 European cohorts.
Environmental research
Open PubMedPMID 39546315 • 2024 Nov 4
A Nature-Based Intervention and Mental Health of Schoolchildren: A Cluster Randomized Clinical Trial.
JAMA network open
Open PubMedPMID 36208780 • 2023 Jan 1
Physiological and affective responses to green space virtual reality among pregnant women.
Environmental research
Open PubMedPMID 40681000 • 2025 Dec 15
The effect of virtual immersion in nature on hospitalization stress in psychiatric patients: A randomized controlled trial.
Journal of affective disorders
Open PubMedPMID 36805672 • 2023 Feb 17
A randomized controlled trial of surf and hike therapy for U.S. active duty service members with major depressive disorder.
BMC psychiatry
Open PubMedPMID 33564887 • 2022 Mar 28
Mindfulness-based Therapeutic Sailing for Veterans With Psychiatric and Substance Use Disorders.
Military medicine
Open PubMedPMID 36058362 • 2022 Dec 1
The effects of walking in nature on negative and positive affect in adult psychiatric outpatients with major depressive disorder: A randomized-controlled study.
Journal of affective disorders
Open PubMedPMID 32633650 • 2021 Mar 4
Viewing nature scenes reduces the pain of social ostracism.
The Journal of social psychology
Open PubMedPMID 41112671 • 2025
The mediating role of environmental restorativeness between vegetation levels and physical activity intention: a photo-based experimental study.
Frontiers in public health
Open PubMedPMID 33946197 • 2021 Apr 30
Associations between Nature Exposure and Health: A Review of the Evidence.
International journal of environmental research and public health
Open PubMedPMID 26124129 • 2015 Jul 14
Nature experience reduces rumination and subgenual prefrontal cortex activation.
Proceedings of the National Academy of Sciences of the United States of America
Open PubMedPMID 36202135 • 2023 Jun
Clinical guidelines for the use of lifestyle-based mental health care in major depressive disorder: World Federation of Societies for Biological Psychiatry (WFSBP) and Australasian Society of Lifestyle Medicine (ASLM) taskforce.
The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry
Open PubMedPMID 34053342 • 2022 Jan
Psychedelics and health behaviour change.
Journal of psychopharmacology (Oxford, England)
Open PubMedPMID 37516682 • 2023 Sep
Do Mental Health Changes in Nature Co-occur with Changes in Heartrate Variability and Executive Functioning? A Systematic Review.
Current environmental health reports
Open PubMedPMID 39293753 • 2024 Dec 15
Nurturing attention through nature.
Environmental research
Open PubMedPMID 34588297 • 2021 Oct
Nature and Children's Health: A Systematic Review.
Pediatrics
Open PubMedPMID 38776651 • 2024 Jun
Green space exposure and blood DNA methylation at birth and in childhood - A multi-cohort study.
Environment international
Open PubMedFallback search fetch failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=12&q=daily%20outdoor%20time
Community Sources
PUBMED • 2024 • PubMed indexed study
PMID 38241831 from Environ Int.
Outcome: See linked record for design and specific outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2022 • PubMed indexed study
PMID 34980893 from J Expo Sci Environ Epidemiol.
Outcome: See linked record for design and specific outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 41080844 from Frontiers in public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 37268208 from Environmental research.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 36361386 from International journal of environmental research and public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 39209768 from International journal of mental health nursing.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 34299932 from International journal of environmental research and public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 38821342 from Environmental pollution (Barking, Essex : 1987).
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 33500323 from Journal of epidemiology and community health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2020 • Human evidence curation set
PMID 31818476 from Environmental research.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 39546315 from JAMA network open.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 36208780 from Environmental research.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 40681000 from Journal of affective disorders.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 36805672 from BMC psychiatry.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 33564887 from Military medicine.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 36058362 from Journal of affective disorders.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 32633650 from The Journal of social psychology.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 41112671 from Frontiers in public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 33946197 from International journal of environmental research and public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2015 • Human evidence curation set
PMID 26124129 from Proceedings of the National Academy of Sciences of the United States of America.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 36202135 from The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 34053342 from Journal of psychopharmacology (Oxford, England).
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 37516682 from Current environmental health reports.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 39293753 from Environmental research.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 34588297 from Pediatrics.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 38776651 from Environment international.
Outcome: See linked PubMed abstract for methods and outcomes.[1700,2611,3053, etc.]
Open source