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Kokyū · Breath
Six Breaths a Minute, and the Body’s Own Regulator Woke Up
People with high blood pressure slowed their breathing to six a minute. Within minutes their blood pressure fell and the reflex that is meant to steady it recovered to the level of healthy people.
Jōshin Kokyū Hō, focusing the Mind with the Breath, is a foundation practice within the system of Reiki that works with the breath.
I have included a unique button in The Shūyō App that encourages the slowing of the breath: you press a flower and watch it blossom and then release the flower on the out-breath. Each out-breath slowly lengthens. After 6 breaths you can see how much deeper your breathing has become. Perfect for anxiety, high blood pressure and focus.The study
A reflex that goes quiet in hypertension, and a breath that wakes it
The baroreflex is the body’s own blood pressure regulator. Sensors in the major arteries feel pressure rise and tell the heart to slow; feel it fall and tell the heart to quicken. In hypertension this reflex becomes sluggish, and the sympathetic nervous system runs hot. Cardiologists in Pavia asked a simple question: does breathing slowly change any of that?
People with essential hypertension and a group of healthy controls breathed normally, then at fifteen breaths a minute, then at six. Throughout, the researchers recorded blood pressure, heart rate, and the sensitivity of the baroreflex, measured from how quickly the heart responded to natural swings in pressure.
- Design
- Within-subject comparison of breathing rates
- Participants
- Adults with hypertension, plus healthy controls
- Measured
- Blood pressure, heart rate, baroreflex sensitivity, chemoreflex
- Published in
- Hypertension, 2005
What they found
Slow breathing lowered the numbers and revived the reflex
Blood pressure fell within minutes
During six breaths a minute, systolic pressure in the hypertensive group dropped by 8.6 mmHg and diastolic by 4.9 mmHg. This was the immediate effect of the breathing itself, not weeks of practice.
The baroreflex came back
In hypertension the reflex was blunted. At six breaths a minute its sensitivity rose to values similar to the healthy controls breathing normally. Slow breathing did not just lower pressure; it restored the mechanism that regulates it.
Sympathetic drive eased
Slow breathing reduced sympathetic activation and calmed the chemoreflex, the body’s over-eager response to carbon dioxide that drives fast, shallow breathing in hypertension. The authors suggest a potentially beneficial effect in treating the condition.
Ten seconds per breath is not an exotic number. It is roughly the pace of a settled Jōshin Kokyū Hō.
The Hara breath, at the pace the heart prefers
Nobody in this study was told to breathe into their belly or think about their Hara. They were simply paced at six breaths a minute. But a slow, deep breath that fills the lower body and empties fully is, in practice, a six-breaths-a-minute breath. To breathe deeply and unhurriedly into the Hara lands in the same physiological place.
The finding about the baroreflex is the one worth remembering. Slow breathing did not override the body. It reminded the body of a regulation it already had. That is close to how we describe grounding: not adding something, but returning to a foundation that was there.
Read this part too
Limitations
A landmark, but a laboratory one.
- Minutes in a lab.The blood pressure drop was measured during paced breathing, not after weeks of practice, and not out in daily life.
- Small groups.Cardiology physiology studies of this kind use small numbers, and this one was no exception. Individual variation was large.
- Paced by a metronome.Participants breathed to an external cue. Whether the same effect comes from self-paced practice is a separate question, though later trials suggest it does.
- Two decades old.Published in 2005. Much has been built on it since, including device-guided breathing for hypertension, but the original is a starting point.
- Not a treatment trial.No one was taken off medication, and no long-term outcomes were measured. This shows a mechanism, not a cure.
The research
Joseph, C. N., Porta, C., Casucci, G., Casiraghi, N., Maffeis, M., Rossi, M., & Bernardi, L. (2005). Slow breathing improves arterial baroreflex sensitivity and decreases blood pressure in essential hypertension. Hypertension, 46(4), 714–718.
This is research into breathing, not into Reiki, Reiki treatments or Reiki training. It is included here because breath work is one of the foundation practices of the system. High blood pressure needs medical care; please do not change any treatment on the strength of a blog post.
Ten seconds in and out. The body has been waiting to be reminded.
