HRV biofeedback
Train your heart-rate variability against a live readout. Large effects on stress and anxiety across 24 trials.
Why
Heart-rate-variability biofeedback pairs slow breathing with a live HRV readout from a chest strap, ear clip, or wearable, teaching you to push your own autonomic balance toward parasympathetic dominance. Unlike unguided breathing, the feedback loop makes the training measurable — you watch coherence rise as you settle. A meta-analysis of 24 studies found large reductions in self-reported stress and anxiety.
The technique
- 1
Get a sensor an HRV app can read in real time (chest strap, ear clip, or supported watch).
- 2
Sit comfortably and breathe out longer than in, near 6 breaths per minute.
- 3
Watch the live trace and adjust pace until coherence holds high.
- 4
Train 10–20 minutes daily; re-test resting HRV after 4–8 weeks.
When to use it
Daily training block, or before a high-stakes meeting once the skill is grooved.
Ideal for
Data-minded people who already own a wearable, and anyone who wants stress training with a visible score.
Markers this may influence
Evidence
Goessl 2017 Psychol Med meta-analysis, 24 studies (n=484) — large reductions in self-reported stress and anxiety (Hedges' g ≈ 0.8) vs control; effect held regardless of session count. More sham-controlled trials still wanted.