Respiratory Signals

Breathing patterns are closely linked to stress. Rapid, shallow breathing indicates sympathetic activation, while slow, deep breathing indicates relaxation. Nefesh accepts respiratory rate as an additional signal for stress assessment.

Accepted Fields

Field	Type	Unit	Description
`respiratory_rate`	float	breaths/min	Breathing rate (typical range: 12-20 at rest, elevated during stress)

Status

Respiratory signals are accepted and stored by the API. Fusion into the stress score is planned for a future release.

Compatible Devices

Polar H10 — respiratory rate derived from chest movement
Garmin — respiratory rate from wrist sensor
Oura Ring — nighttime respiratory rate
Any wearable that outputs breathing rate

Example Payload

{
  "session_id": "sess_abc123",
  "timestamp": "2026-03-30T14:30:00Z",
  "respiratory_rate": 22,
  "heart_rate": 88
}