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What HRV Actually Measures
- Heart rate variability (HRV) measures the precise timing between individual heartbeats rather than exercise heart rate.
- HRV reflects how the heart speeds up with inhalation and slows with exhalation, and greater variation indicates better recovery.
HRV Targets The Recovery System
- HRV directly measures parasympathetic nervous system activity tied to rest and recovery.
- Resting heart rate mixes parasympathetic, sympathetic and hormonal effects, making HRV a more sensitive recovery metric.
Use Good Sensors And Morning Tests
- Use a high-quality chest strap or validated pulse sensor to capture precise interbeat intervals.
- Measure HRV consistently every morning (sitting or standing) to build a useful baseline and track accumulating fatigue.


