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Brief structured respiration practices enhance mood and reduce physiological arousal
Preregistered month-long remote RCT (NCT05304000) in adults compared daily 5-min cyclic sighing, box breathing, cyclic hyperventilation with retention, or mindfulness meditation: pooled breathwork beat mindfulness on mood and respiratory-rate reduction; cyclic sighing was highlighted as especially promising.
Design
- Registry: NCT05304000
- Interventions (5 min/day, ~4 weeks): cyclic sighing (prolonged exhalations), box breathing, cyclic hyperventilation with retention, vs mindfulness meditation matched for time
- Endpoints: daily mood and anxiety scales plus physiological arousal (respiratory rate, heart rate, HRV / RMSSD); wearable (WHOOP) aggregates reported alongside diary measures
Main quantitative claims (authors)
- Breathwork vs mindfulness: greater improvement in mood and reduction in respiratory rate (mixed-effects models; p < 0.05 in abstract)
- Between breathwork styles: abstract emphasizes exhale-focused cyclic sighing as the stand-out condition for stress-management potential—inspect supplementary tables for pairwise breathwork contrasts and HRV slopes
Evidence hygiene
- Conflict of interest: PubMed notes A.D.H. later advised WHOOP—relevant because wearables contributed secondary physiology streams
- Do not conflate with Wim Hof–style intermittent hypoxia RCTs (Blades 2024, Kox 2012); different breathing stimulus class
Database placement
Primary home: Breathing techniques (breathing-exercises). Secondary link: Mindfulness meditation (meditation-practice) because mindfulness was the time-matched comparator.
Outcomes
- mood-affectBreathwork (pooled) showed greater mood improvement vs equivalent-duration mindfulness meditation (mixed-effects model; authors report p < 0.05); cyclic sighing singled out in conclusions.
- respiratory-rateBreathwork showed greater reduction in respiratory rate vs mindfulness (p < 0.05).
- Heart Rate VariabilityRMSSD and other wearable-derived autonomic metrics tracked over the intervention window—read alongside adherence and psychology trajectories in the primary paper.