What it’s for
- Relaxation
- Paced breathing practice
Breath holding and forceful hyperventilation are different techniques. An HRV change is not itself a sleep outcome.
Deliberately slowing breathing to a comfortable, repeated rhythm.
Purpose, evidence and practical considerations.
Breath holding and forceful hyperventilation are different techniques. An HRV change is not itself a sleep outcome.
A meta-analysis found increases in vagally mediated HRV during and after slow breathing. This does not establish one inhale/exhale ratio as a treatment for insomnia.
Confidence: moderate
Usually low risk when gentle, but dizziness, tingling or anxiety can occur; stop if symptomatic. People with respiratory, cardiovascular or panic disorders should avoid forceful or prolonged techniques without guidance.
Slow breathing changes respiratory sinus arrhythmia, baroreflex coupling and autonomic measures during practice. Increases in heart-rate variability do not by themselves prove improved sleep or long-term health outcomes.
Regulatory status: behavioral practice
The evidence on this page does not automatically apply to:
How people use it, with their schedules, context and original sources.
10 min · nightly · before bed
He uses slow breathing to wind down and aims to raise his HRV.
Session and schedule patterns reported in public protocols; these are observations, not instructions. Private and hidden usage is excluded.
These share a protocol with this intervention. This does not establish that they work together or are suitable alternatives.