Go Deeper With Your Ring Data

Quantifies the disorder in your sleep stage distribution using information theory. Computed from 5-minute epoch data (clinical PSG uses 30-second epochs). Best used for tracking your personal trend over time rather than comparing to clinical reference values.

Maps the probability of transitioning between sleep stages using Markov chains at 5-minute resolution. Captures major stage transitions — brief arousals under 5 minutes are not visible at this data resolution.

Measures REM fragmentation at 5-minute epoch resolution. Captures major REM disruptions — brief awakenings under 5 minutes may not be detected. Lower values indicate more consolidated REM periods.

Your nervous system's tug-of-war — sympathetic (fight/flight) vs. parasympathetic (rest/digest) estimated from HRV epoch patterns and resting heart rate dynamics.

Classifies your recovery archetype — Adaptive, Brittle, Slow-burner, or Resilient — based on how your body responds to stressors over time.

Vagal tone estimate derived from your nightly HRV patterns. Higher values suggest stronger parasympathetic recovery capacity. Adapted for 5-minute epoch data.

Estimates circadian rhythm health from your sleep timing consistency, bedtime regularity, and wake patterns. A proxy for circadian age — full assessment would require core body temperature rhythm or melatonin onset data not available from wearable rings.

Detects long-term shifts in your HRV baseline — are you trending healthier over months, or is your nervous system slowly declining?