A sleep regularity score is about timing consistency, not just hours.
Recent wearable research has made sleep regularity more interesting. daygauge shows your sleep timing against your usual window rather than a separate regularity score.
What is a sleep regularity score?
A sleep regularity score usually describes how consistent sleep and wake timing are across days, rather than only counting total sleep time.
Regularity is different from duration
Eight hours from 22:45 to 06:45 is not the same timing pattern as eight hours from 01:30 to 09:30.
daygauge shows your sleep minutes and, on Today, your sleep timing against your usual window, so you can see the difference.
What a useful score shows
Instead of saying your sleep was bad, it is more useful to see that your wake time varied by 73 minutes across the last 7 days, with two nights missing.
That gives you a measurable target without guilt.
How it relates to the Life Index
The Life Index uses your sleep minutes against your own average (25% of the score) and a separate consistency part (10%) that measures how close the day is to your usual. Sleep midpoint is not an input.
If a reading is missing, daygauge drops that part and rebalances the weights instead of guessing.
A timing score should show its moving parts.
A single sleep score can hide why it changed. The parts worth checking are bedtime spread, wake-time spread, drift in the middle of your night and missing nights. daygauge shows your sleep timing against your usual window and your sleep minutes against your average.
Example: wake time ranged from 06:42 to 08:05 across the week, with one night missing.
That gives you a cleaner experiment: hold your wake time steady for three days with a Quest, then compare your sleep and next-day readings.
Further reading.
These studies describe groups of people. They help explain the topic, but they cannot tell you what will happen to you.
- eLife 2023 UK Biobank sleep regularity and mortality study
- Nature Medicine 2024 wearable sleep study
- CDC sleep duration recommendations
Research context only. daygauge does not diagnose, treat, prevent or predict disease risk. Personal medical concerns belong with a qualified clinician.
Related guides.
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