Sleep Signals
Sleep quality and current sleep stage affect stress tolerance, cognitive function, and emotional regulation. Nefesh accepts sleep data to provide better context for daytime stress assessments.
Accepted Fields
| Field | Type | Values | Description |
|---|---|---|---|
sleep_stage | string | awake, light, deep, rem | Current or most recent sleep stage |
Status
Sleep signals are accepted and stored by the API. Fusion into the stress score is planned for a future release.
Compatible Devices
- Oura Ring — sleep staging via accelerometer + PPG
- Apple Watch — sleep tracking via watchOS
- Garmin — sleep stages via wrist HR
- Whoop — sleep performance scoring
Example Payload
{
"session_id": "sess_abc123",
"timestamp": "2026-03-30T07:00:00Z",
"sleep_stage": "awake",
"heart_rate": 68,
"rmssd": 52
}