Resting Heart Rate — Your Daily Cardiovascular Report Card
Elite athletes sit at 40–50 bpm. Yours tells a story. Here is how to read it.
Track This Biomarker Free → ← All BiomarkersWhat Is Resting Heart Rate?
Resting Heart Rate (RHR) is measured when fully at rest, ideally first thing in the morning. Lower RHR indicates greater cardiovascular efficiency and parasympathetic tone. A sudden RHR elevation of 5+ bpm above personal baseline is one of the most reliable early indicators of incoming illness — appearing 24–72 hours before symptoms in published research.
Why It Changes
- Aerobic training improves RHR — conversely, detraining raises it rapidly
- Weight gain — more tissue requires more cardiac work
- Sleep deprivation — even one poor night raises RHR 3–5 bpm
- Stress elevation — sympathetic nervous system activation increases baseline
- Dehydration — raises RHR by 5–10 bpm
- Illness onset — one of the first detectable physiological changes
How Hunuu Health Uses This Signal
Hunuu tracks your nightly RHR from any connected wearable and builds a personal DPB baseline. Elevations above 2.5 standard deviations trigger IHDS detection — one of the primary pre-illness indicators in the Hunuu predictive model.
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