Sleep Metrics
Sleep quality and duration metrics
Deep Sleep Percentage (Deep%)
The proportion of sleep spent in deep, restorative stages.
Light Sleep Percentage (Light%)
The proportion of sleep spent in light sleep stages (N1 and N2).
REM Sleep Percentage (REM%)
The proportion of sleep spent in rapid eye movement stage.
Sleep Apnea Index (AHI)
Apnea-Hypopnea Index measuring breathing disruptions per hour of sleep.
Sleep Consistency
How regular your sleep and wake times are day to day.
Sleep Cycles
Number of complete sleep cycles (typically 90 minutes each) per night.
Sleep Debt
Accumulated difference between needed sleep and actual sleep obtained.
Sleep Efficiency
The percentage of time in bed actually spent sleeping.
Sleep Fragmentation Index
A measure of how disrupted sleep is throughout the night.
Sleep Heart Rate
Average heart rate during sleep, typically lower than waking heart rate.
Sleep Latency
The time it takes to fall asleep after going to bed.
Sleep Respiratory Rate
Breathing rate during sleep, which can indicate sleep quality and health issues.
Sleep Temperature
Body temperature patterns during sleep that affect sleep quality.
Snoring Duration
Time spent snoring during sleep, which may indicate sleep apnea risk.
Time in Bed (TIB)
Total time spent in bed, including time awake before falling asleep.
Total Sleep Time (TST)
The total amount of time spent asleep during a sleep period.
Wake After Sleep Onset (WASO)
Time spent awake after initially falling asleep, a measure of sleep fragmentation.