Allostasis

Breathing practices with a visual pacer

Four breathing patterns, each about five to ten minutes, with an on-screen pacer that expands and contracts so you can follow the rhythm with your eyes instead of counting. Optional spoken cues mark each phase.

• Box breathing. Equal counts in, hold, out, hold. A square rhythm that gives a racing mind something simple to rest on.
• 4-7-8 breathing. A long hold and a longer out-breath. Often used before sleep.
• Extended exhale. An out-breath noticeably longer than the in-breath, with no holds. The simplest pattern here, and the one to start with if breath holds feel uncomfortable.
• Belly breathing. Letting the breath sink low into the belly rather than high in the chest.

Sound, cold, movement, and a pause

Six short practices that work on the vagus nerve by other routes: a long low hum and a chanted tone that vibrate the throat, cold water on the face to trigger the dive reflex, gentle stretching and massage of the neck and shoulders, resting with the legs up a wall, and a deliberate pause before eating or drinking. Each one opens with instructions and a note on who should take care.

How a session works

Choose a practice, read the instructions, set the length, and start. The pacer and the cues run on their own; you can pause, end early, or let the session finish and fade. You do not need an account or an install, there are no ads, and nothing about you is sent anywhere. Your history stays in your own browser.

Why slow breathing works

Breathing out slows the heart. A longer exhale leans on the parasympathetic side of the autonomic nervous system, the rest-and-digest side, which is carried largely by the vagus nerve. Slow, even breathing around five to six breaths a minute lets heart rate and breath fall into step. The glossary explains vagal tone, resonance frequency breathing, and the dive reflex in plain terms.

What Allostasis is not

It is a practice companion. It is not a medical device, and it does not measure heart rate, breathing, or stress. Nothing here diagnoses or treats a condition. If you are unwell, pregnant, or have a heart or breathing condition, check with a clinician before trying breath holds or cold water. Created by Matt Knapp, Ellicott City, Maryland.