Pattern | Effect | When to Use |
4-7-8 breath | Inhale 4 s → hold 7 s → exhale 8 s. Activates parasympathetic system and slows heart rate. | Before sleep or moments of anxiety |
Box breathing (4-4-4-4) | Equal inhale, hold, exhale, hold. Increases focus and stabilises oxygen–CO₂ balance. | During work or transitions |
Coherent breathing (5-5) | Five seconds in, five seconds out. Synchronises heart and breath (HRV increase). | Daily 10-min practice |
Physiological sigh | Double inhale + slow exhale. Rapidly releases CO₂ and tension. | Acute stress reset |
Each technique works because it shifts carbon dioxide levels, which directly affect calm and alertness.
Moment | Micro-Practice | Result |
Before meetings | 2 × physiological sighs | Clears tension, resets tone |
In traffic or queue | 5 slow breaths through nose | Prevents stress escalation |
After meals | 3-min walk + calm breathing | Supports digestion and relaxation |
Before bed | 4-7-8 breathing | Signals safety for sleep onset |