The breathwork encyclopedia.

Breathwork for Beginners: A 4-Week Learning Path

A four-week reading and practice path for people new to breathwork. Foundational articles, gentle assessments, and one Auralize shift per week.

Breathwork for Athletes: A 6-Week Path

A six-week reading and practice path for athletes. Foundational science, CO₂ tolerance building, cadence work, and priming.

Sleep Restoration Path: 4 Weeks to Better Sleep

A four-week path for people rebuilding sleep — nasal breathing, evening wind-down, and pre-sleep breathwork.

Anxiety Recovery Path: 5 Weeks

A five-week path for people working through chronic or recurring anxiety. Physiological sigh drills, extended exhale, and daily coherence.

Box Breathing: The 4-4-4-4 Structured Reset

A four-count inhale, hold, exhale, hold — the same technique used by Navy SEALs, ER physicians, and elite performers to bring composure under pressure without sedation.

Coherence Breathing (5.5-5.5): The HRV-Peak Rhythm

Coherence breathing sits at 5.5 breaths per minute — roughly the resonance frequency of the cardiovascular system. It is the single most reliable way to raise heart rate variability on demand.

The Physiological Sigh: The Fastest Stress Reset

A double-inhale through the nose followed by a long exhale through the mouth. The fastest downshift the body has, and the reset humans and animals use without being taught.

Breathwork for Anxiety Relief

Not every anxious state responds to the same breath. Panic wants a fast reset. Chronic low-grade anxiety wants a coherence habit. Here is how to match the technique to the state.

Breathwork for Sleep Onset

You cannot force yourself asleep, but you can reliably reduce the arousal that keeps you awake. Long exhales, low pace, no counting acrobatics — that is the goal.

Breathwork for Focus and Concentration

For focus, you want composure without sedation. That points to box breathing or a light coherence practice — not the long exhales that make you sleepy.

HRV and Coherence Breathing: What the Research Shows

Heart rate variability rises when the breath is slow, steady, and near the cardiovascular resonance frequency. Here is the mechanism and the evidence.

CO₂ Tolerance: The Real Limiter in Breathwork

The urge to breathe is driven by CO₂, not oxygen. Train that urge and every breathwork practice — plus a lot of your resting physiology — improves.

Vagal Tone: What It Is and How Breath Trains It

The vagus nerve is the main parasympathetic highway. Vagal tone — the strength of that signal — predicts stress resilience. Slow breathing raises it.

CO₂ Capacity Builder: How the Program Works

A four-week program that raises CO₂ tolerance through short daily box-breathing intervals, scaled to your latest BOLT score.

Slow Breathing Mastery: How the Program Works

A six-week program that trains your baseline breath rhythm downward — from the typical 12–18 BPM toward the coherence zone around 6 BPM.

Deep Focus Protocol: How the Program Works

A three-week program that pairs coherence breathing with box breathing to build a reliable pre-focus routine.

The BOLT Test: What It Measures and How to Interpret It

BOLT stands for Body Oxygen Level Test — a misleading name, since it actually measures CO₂ tolerance. Here is what your BOLT score means and what to do with it.

The Resting Breath Rate Test

A one-minute count that reveals your baseline breathing rhythm — a stronger predictor of resting nervous-system tone than most people realise.

The Exhale Control Test

A short assessment that measures how long you can sustain a controlled, quiet exhale — a proxy for diaphragm control and breath composure under load.

Box Breathing vs 4-7-8: Which One Should You Use?

Box breathing gives you structure without sedation. 4-7-8 gives you deep downshift. They are not interchangeable — here is how to choose.

Coherence Breathing vs Generic Slow Breathing

Slow breathing is any pattern slower than resting. Coherence is a specific rate — 5.5 BPM — chosen to match the cardiovascular resonance frequency. The distinction matters.

Wim Hof vs Slow Breathing: Different Tools, Different Jobs

Wim Hof-style breathing lifts arousal and shifts blood chemistry. Slow breathing lowers arousal and raises HRV. They do opposite things and can both belong in a week.