Why roughly six breaths?
Breathing near 0.1 Hz — about five to six cycles each minute — often produces a strong, temporary heart-rate oscillation linked to breathing.
The breathing evidencePaced breathing, without the hype
A quieter way to breathe.
Set a gentle rhythm. Follow it for a few minutes. No scores, no claims that a browser can read your nervous system.
Free breathing pacer
Choose a rhythm. Keep it easy.
This tool guides timing only. It does not measure vagal tone, heart-rate variability, or any health outcome.
Ready
Begin when comfortable
3:00 remaining
Inhale 5.5s, exhale 5.5s. A well-studied slow-breathing default at about 5.5 breaths per minute.
Ready when you are.
What this is — and is not
A useful timer, labeled honestly.
Slow breathing can change heart-rate patterns while you do it. That is not the same as diagnosing your nervous system or giving you a permanent “vagal tone” score.
Can vagal tone be measured?
Not directly with a watch, app, or breathing timer. Researchers use indirect measures such as carefully collected heart-rate variability.
Vagal tone, honestlyWhat about “vagus hacks”?
Some are reasonable wellness practices. Some borrow scientific language their evidence has not earned. The distinction matters.
Review the popular claimsA sensible starting point
Three minutes. No strain.
Sit or lie somewhere supported. Let the breath stay quiet and comfortable. If the suggested timing feels like work, choose a shorter cycle or return to ordinary breathing. Stop if you feel dizzy or unwell.