Body signals
From the app’s English Help & Guide · Reference release 1.0.8
Wearable context
Sleep, resting heart rate, HRV, and wrist temperature can be averaged by cycle phase when Health access is enabled.
Steadied caches selected wearable readings from day one, even if the deeper Body signals insight is unlocked later.
Body-signal changes can also nudge context logging, for example when low sleep may help explain a rough day.