Resting HR
Your lowest heart rate of the night — the honest baseline.
The baseline
Resting heart rate is your heart at its most honest — no effort, no adrenaline. It drifts up when you're stressed or overreached, and settles back when you recover.
How we read it
metric lowest 1-minute average of the night context vs your 30-day baseline drift > 3 bpm up = load, watch it trend falling over weeks = fitness
Why it matters
A rising resting HR is the earliest sign of too much load. Catch it on day two, and you skip the two-week spiral.