Category · Breath & Vagal Tone
Slow, long-exhale breathing is the cheapest anxiolytic we know of. It mechanically loads the parasympathetic system via the vagus nerve. These seven tools each pace the breath differently — for falling asleep, for acute spikes, for building CO₂ tolerance, or for building a daily practice. None require equipment.
A four-phase square (inhale–hold–exhale–hold) paced at adjustable tempo. Unlike plain timers, this version scores breath coherence — how close your actual cycle matches the target — and shows phase labels so you never lose your place.
Tip: the 4-4-4-4 box is the most studied; 5-5-5-5 is gentler on the lungs; 4-7-8 below is best for sleep.
Andrew Weil's adaptation of pranayama. Inhale 4, hold 7, exhale 8. The long exhale is the only phase that matters; the hold makes room for it without hyperventilation. Most versions online ignore that this is a sleep tool — we add a position guide and a wake-up safety check.
Four rounds total = ~2 minutes. After finishing, stay lying for at least 60 seconds — many users feel sleepy mid-round. That's normal.
Lehrer & Vaschillo's resonance-breathing protocol: ~5.5 breaths per minute maximises heart-rate variability oscillations and baroreflex loading. Standard apps hard-code 5/5; we let you tune both phases independently and show a live coherence strip against your target BPM.
The orb scales smoothly between the two phase lengths. Aim for 5–20 minutes daily for ≥4 weeks before judging the practice.
Cardiac vagal tone is a real physiological variable, but measuring it properly requires an ECG. This short proxy — five observable signs — gives you a trend, not a number. Use the same tool every two weeks; change over time is more useful than any single score.
A gentle Buteyko-style probe. After a normal exhale, hold your breath until you feel the first definite urge to breathe — not the maximum. That duration estimates your CO₂ tolerance, which is highly correlated with anxiety resilience and panic threshold.
Huberman & Malin's 2023 cell paper: a double inhale through the nose followed by an extended exhale through the mouth re-inflates collapsed alveoli faster than any other breath pattern studied. One to three sighs in a row measurably lowers autonomic arousal within 30 seconds.
Place one hand on your chest, one on your belly. The chest hand should move less than the belly hand. This tool turns that tactile cue into a 60-second comparison: it tells you which hand moved more and how big the difference was, so you can train the pattern over time.
Tip: actually do the hand test once — guess your numbers, then measure. Calibration matters.
Most people feel a 5–15% reduction in subjective anxiety within a single 4-minute round of box or coherent breathing. Objective changes (heart-rate variability, skin conductance) are measurable within 1–2 weeks of daily practice. There is no "wrong" frequency — pick what you'll do.
Because anxious bodies are used to short, fast breaths. Extending the exhale is unfamiliar and can feel effortful for the first week. The urge to return to short breaths is the signal you're exercising the muscle, not the sign of a problem.
Mild lightheadedness usually means you held too long, or breathed too fast before the hold. Sit down, breathe normally for a minute, and resume with a slightly shorter hold. Persistent dizziness means stop and consult a clinician.