Sleep curves

Updated 2 Nov 2026

See how a night unfolded, then compare it with the other nights. The curves show device estimates; the diary records how sleep actually felt.

Inside a night

Wake date

Reports poor sleep, a roughly 01:00 attempt and 09:45 waking; attributes it mainly to timing, with many thoughts before bed. Oura 83 / COROS 88. Contributing effects are not isolated.

Open this night’s diary and measurements

Sleep stages · Oura

Chronological 30-second labels: awake at the top, deep sleep at the bottom. These are estimated stages, separate from remembered awakenings.

Heart rate · Oura bpm

Five-minute samples on the same clock axis. Gaps stay blank; the pulse axis adapts to each night. No smoothing or filled-in measurements.

Inspect time — drag the slider, use its arrow keys, or move across either curveSelect a point to inspect its time, stage and nearby pulse sample.

The latest night’s curves are shown above. Enable JavaScript to select another date or inspect individual samples. All dated summaries remain in the sleep record.

Across nights

Compare

Oura COROS

Wake dates · 2026-10-13 to 2026-11-02. Oura’s October 22 battery-truncated night is a gap in every whole-night trend. COROS remains a separate series. Select a dot to inspect that night, or use the exact values below.

Select a dot for its exact value and the corresponding overnight curves.

Jump to the selected night’s curves ↑

Exact plotted values and diary context

Wake date	Oura	COROS	Diary
2026-10-13	75	93	First observation; not a baseline distribution
2026-10-14	84	95	Second paired observation; earlier attempt, disrupted continuity
2026-10-15	71	80	Third paired observation; comfortable and alert on waking, shorter main sleep
2026-10-16	90	98	Fourth paired observation; encouraging earlier routine
2026-10-17	64	82	Social-night exception; floor sleeping, late food and alcohol
2026-10-18	90	98	Long sleep after a midnight sleep attempt; brief remembered awakenings, new blanket comfortable
2026-10-19	91	91	Slept okay with brief remembered awakenings; stressful pre-bed activity; no urinary awakening after late water
2026-10-20	92	89	Slept okay-ish; many brief remembered awakenings and plentiful dream recall; roughly midnight bedtime
2026-10-21	90	91	Fewer remembered awakenings, still several; initial sleepiness cleared in 10–15 minutes
2026-10-22	Incomplete	91	Middling subjective sleep; Oura recording incomplete after reported low battery; COROS retained for the full-night estimate
2026-10-23	83	88	Cleaner woke me around 09:30–09:40; stayed awake and remained a little sleepy at follow-up
2026-10-24	86	94	Oura 86/COROS 94; no date-specific subjective diary supplied
2026-10-25	69	65	Alcohol, sickness, late bedtime and pre-bed emotions reported; Oura 69/COROS 65
2026-10-26	85	94	Slept badly, woke sleepy, ongoing body pains and unhappy overall despite Oura 85/COROS 94; reports no naps
2026-10-27	91	90	Felt good during the night and in the morning; almost all body pains gone; tried sleeping around 23:10 but initially could not fall asleep; Oura 91/COROS 90
2026-10-28	91	94	Tried sleeping around 00:30 after a social day; night okay, morning good, possible brief awakenings; late food/lights and pulse felt suboptimal; Oura 91/COROS 94
2026-10-29	90	86	Oura revised to 90 / 8h57m30s asleep through 09:37; COROS 86 / 9h09m through 09:19; user confirms sleep during 08:27–09:19
2026-10-30	85	89	Felt good; sleep attempt around 00:30, waking around 09:15–09:30, last meal 18:00; Oura 85/COROS 89
2026-10-31	93	83	Good overall sleep and morning; midnight onset, waking 09:15–09:30, last food 19:00, no naps; recurring cold-feet/blanket mismatch; Oura 93/COROS 83
2026-11-01	96	87	Good experienced sleep, Oura 96 / COROS 87. Sleeping surface uncomfortable; pillow better, blanket comparable, temperature much better and stable. Background noise felt helpful. Light and late food remain perceived drawbacks, with their relative impact unproven.
2026-11-02	83	88	Reports poor sleep, a roughly 01:00 attempt and 09:45 waking; attributes it mainly to timing, with many thoughts before bed. Oura 83 / COROS 88. Contributing effects are not isolated.

Look for patterns, then check the diary

Are awake labels isolated or clustered? Compare their timing with what you remember.
Does pulse settle early or stay elevated? Compare with reported meals, training, illness and alcohol without assigning a cause from one night.
Do the devices move together across nights? A disagreement remains visible rather than being averaged away.
Does better grading coincide with better experienced sleep? October 26 had higher scores alongside reported bad sleep, waking sleepiness and body pains.

COROS’s connector exposes nightly summaries, not a stage-by-stage timeline. The overnight curves therefore use Oura only. Additional rest/nap detections are excluded from these main-night curves; disputed detections remain in their dated accounts.

Sources, gaps and update rules

Curve retrieved 2026-11-02T21:00:24.868469+00:00.

Thirty-second Oura stage labels and sampled pulse are available for 21 logged main episodes. They are retrieved on demand; the selected night’s retrieval time is shown above. Each timeline matches the existing record’s exact episode boundaries and summary values. The stage sequence is anchored at the provider’s episode start; any final partial epoch is clipped at the episode end, and uncovered seconds stay blank. Pulse uses each sample object’s own timestamp and interval. Missing pulse samples break the line.

Daily comparisons use the canonical record, including separate provider scopes and the incomplete-recording exclusion. No COROS stages are reconstructed from percentages. The curves do not measure EEG or validate the sleep labels. All clock times use America/Los_Angeles. New daily entries appear in the trends automatically; a missing overnight timeline is kept unavailable until fetched on demand. No scheduled sync is added.

Oura API definitions · Measurement limits · Experienced and measured function