Lifestyle
Breathwork
Last updated Sat May 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
What changes with practice
Slow paced breathing (~5–6 breaths/min, extended exhalation) reliably:
- Increases HRV.
- Reduces blood pressure acutely.
- Lowers sympathetic tone.
- Reduces self-reported anxiety.
- Improves CO2 tolerance.
Specific protocols
- Resonance breathing: ~5.5 breaths/min, equal in/out; the rate that maximises HRV amplitude in most adults.
- Box breathing: 4 sec inhale, 4 hold, 4 exhale, 4 hold. Used by military, athletes.
- Physiological sigh (Huberman-popularised): double inhale + long exhale; quickly reduces stress in moments of acute arousal.
- Buteyko / nasal-only: emphasises nasal breathing, slight CO2 retention; small RCT evidence in asthma.
- Wim Hof method: 30–40 forced deep breaths + breath-hold cycles. Acute sympathetic activation; longer-term adaptation claims thin.
What evidence supports
- Acute autonomic shifts (HRV, BP, cortisol): strong.
- Anxiety and panic-disorder symptoms: modest evidence.
- Asthma symptom control: small evidence.
- Resilience to acute stressors: small studies.
What evidence doesn’t support strongly
- Long-term mortality or chronic-disease prevention specifically attributable to breathwork (vs. the broader stress/exercise/ meditation programmes it sits within).
- Specific "detoxification" or immune claims.
Practical
10 minutes/day of slow nasal breathing (in through nose, out longer than in) is a reasonable starting practice. Free apps (Breathwrk, Othership, or simple metronome at 5.5/min) help maintain pace.
Cautions
- High-ventilation protocols (Wim Hof breath-holds) carry rare risk of syncope in or near water — never combine with swimming.
- Pregnancy and severe respiratory disease warrant clinician input before intensive practice.