Why does my Apple Watch consistently overestimate my sleep duration by at least forty-five minutes compared to manual logging?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Why does my Apple Watch consistently overestimate my sleep duration by at least forty-five minutes compared to manual logging?
1 real search · 1 real-search pass
Apple Watch track sleep awake in bed sleep stages movement heart rate Apple support sleep tracking accuracyGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (1)
Classes come from the query-classifier (a local Laya model). 1 of 1 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT1 real searches · gpt-6
Apple Watch track sleep awake in bed sleep stages movement heart rate Apple support sleep tracking accuracy Google ↗
- A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults · pmc.ncbi.nlm.nih.gov
- A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults · pmc.ncbi.nlm.nih.gov
- Estimating Sleep Stages from Apple Watch · apple.com
- Estimating Sleep Stages from Apple Watch · apple.com
- Track your sleep on Apple Watch · support.apple.com
- Track your sleep on Apple Watch and use Sleep on iPhone · support.apple.com