Summary
Dr. Leah Lagos, clinical psychologist and HRV performance coach, shares decades of experience optimizing HRV for world-class performers. Heart Rate Variability is one of the most important metrics for gauging heart health, longevity and fitness - learn how to actually improve it.
Key Points
- The relationship between HRV and brain function plus heart health
- The best way to accurately measure your HRV
- Breathing techniques that improve HRV
- How to use biofeedback for HRV training
- The connection between HRV and stress resilience
- Protocols used with elite performers
- Why HRV matters for longevity
Key Moments
HRV explained: what it measures and why higher is better for resilience
HRV measures beat-to-beat heart variation in milliseconds. Higher HRV means greater autonomic flexibility -- your ability to ramp up for stress and recover quickly. Recent research links HRV to cognitive dexterity and inhibition, not just cardiovascular health.
"People think about stress in terms of, am I stressed or am I not? But what we really should be talking about is your agility in handling it."
HRV biofeedback reduces stress reactivity without changing the stressor
After HRV training, the same number of stressful emails hit your inbox, but your nervous system reactivity drops measurably. You start distinguishing which stressors actually matter versus which ones your body overreacts to.
"The emails don't change. The emails have maybe even increased, but your reactivity to them, the feeling of stress towards them goes down a few numbers."
HRV training protocol: 10 weeks of resonant breathing at 5-6.5 breaths/min
Find your personal resonant frequency (5-6.5 breaths/min), then practice 15 minutes twice daily for 10 weeks. First 4 weeks maximize baseline HRV; remaining weeks train on-demand state shifts. Use a visual breath pacer for added cognitive benefits.
"The HRV training takes approximately 10 weeks, meeting once per week and identifying a rate of breathing that optimizes those beautiful heart rate oscillations."
Nasal vs. pursed-lips breathing: nose-only isn't always best for HRV
Despite the nasal breathing trend, Lagos finds that inhaling through the nose and exhaling through pursed lips often produces better HRV gains than nose-only. Endurance athletes report less fatigue by week 7 with pursed-lip exhales. The biggest training pitfall is trying too hard instead of letting go.
"I have not seen that the nasal breathing produces HRV gains that are more than the inhale through the nose and the exhale through the mouth."
