HRV Science

Stress science, breathing techniques, and the story behind the score. Written by the people building Sereno.

All Breathing HRV Science Sleep Stress Science Wearables
What Your Heart Rate Variability Actually Tells You About Stress
HRV Science

What Your Heart Rate Variability Actually Tells You About Stress

HRV measures the variation between heartbeats. Research suggests it is one of the most reliable real-time indicators of how your nervous system handles stress.

Sereno Team · · 16 min read