Breathing tools
100% deterministic timing — zero artificial intelligence in the calculation. AI personalizes the narrated script; the breathing rhythm is pure arithmetic.
- Box breathing
Four equal-length phases — inhale, hold, exhale, hold — for quick regulation under pressure.
- 4-7-8 technique
Inhale 4s, hold 7s, exhale 8s — a bedtime transition ritual (Dr. Andrew Weil).
- Coherence breathing
~5.5-6 breaths/minute to maximize heart rate variability (HeartMath).
- Physiological sigh
Double nasal inhale + long exhale — rapid stress reduction (Huberman Lab).
- Meditation timer
Free duration with start, interval, and end bells — no script, pure silence.