Sleep science, without false precision.

What Awan reports

Sleep health has several dimensions. Awan’s history views report dated duration and timing, represented completed sessions, and missing or unusable dates. No single “readiness” number can describe all dimensions of sleep health.

For healthy adults, regularly obtaining at least seven hours of sleep is a widely used starting point, while individual need and circumstance vary. The current planner uses the sleep goal you select rather than deriving a new target from recorded history.

Why Awan offers 7- and 14-date views

One night can be unusual. The two dated views provide shorter and longer summaries while preserving dates with missing or unusable data. They do not currently personalise the planner or change the next plan.

Fajr remains the protected deadline

Historical Health data can inform tomorrow’s summary after a sleep session is written by its source. It is not a dependable live signal for moving the required Fajr alarm. Public releases keep the fixed deadline independent of Health and Watch data; earlier Watch waking remains an internal research feature.

Prayer-time calculation conventions and high-latitude rules differ. The app shows the active method and offers a local adjustment so users can align with trusted local guidance.

Post-Fajr sleep and qaylulah

There is no evidence-based rule that post-Fajr sleep is universally good or bad. Awan presents two practical paths: treat Fajr as the final wake, or plan a deliberate return to rest when total sleep and commitments make that appropriate.

If the prior night was short, a brief earlier-afternoon nap may support alertness. Longer or later naps can make night sleep harder for some people. Awan does not treat a nap as a substitute for sufficient main sleep and never promises “perfect 90-minute cycles.”

Wearable limits

Consumer devices infer sleep; they do not observe it the way a clinical sleep study does. Stage estimates, source labels, coverage and sync timing vary. Awan displays provenance and missing data, and emphasises trends rather than exact-stage certainty.

Selected references

1. American Academy of Sleep Medicine and Sleep Research Society — adult sleep duration consensus
2. National Sleep Foundation — sleep regularity consensus recommendations
3. American Heart Association — multidimensional sleep health
4. Peer-reviewed meta-analysis — consumer wearable sleep-staging performance
5. National Heart, Lung, and Blood Institute — healthy sleep habits and naps
6. Apple HealthKit — sleep-analysis values