Your body
Understand your body data — without the anxiety
Rings and watches now hand us HRV, sleep scores, recovery, readiness — a whole dashboard of numbers with almost no instructions. Here's how to read them calmly, and when to just close the app.
The single most useful principle for every health number on your wrist is this: compare yourself to you, not to a stranger's screenshot. Your baseline and your trend tell you almost everything worth knowing. A one-off "bad" number rarely means anything at all.
What the main numbers actually mean
- HRV (RMSSD): variation between heartbeats. Higher usually means better recovery. Falls with age, alcohol, stress, and poor sleep. See typical ranges by age →
- Resting heart rate: a simple, reliable trend. A creeping rise over days often means you're under-recovered or coming down with something.
- Sleep score: an estimate of stages from movement and heart rate. Useful for patterns, unreliable as a nightly grade.
- Recovery / readiness: a blended guess. Treat it as a nudge, not an instruction — how you feel still wins.
The whole dashboard, made calm
Your Body Data, Explained walks you through HRV, sleep, recovery, CGMs, and AI health advice — so you feel informed instead of anxious.
Common questions
Should I trust my wearable?
Trust the trend, not the single day. Wearables are strong at showing your personal patterns over time and weak as precise medical readings.
What's the most useful number to track?
Sleep. Consistent, sufficient sleep improves almost every other metric, including HRV and resting heart rate.
Why doesn't my sleep score match how I feel?
Scores estimate sleep stages and can't feel your fatigue. When the number and your body disagree, believe your body.