1. Longer and more irregular daytime naps were linked to a higher risk of death.
2. The study involved over 86,000 adults aged 43 to 79.
3. Naps between 11 am and 1 pm or 1 pm and 3 pm were associated with increased mortality risk.
4. Validated algorithms were used to detect and analyze nap duration.
5. The study received funding from the Alzheimer’s Association and the American Academy of Sleep Medicine.
6. Wearable devices may be useful in monitoring nap behavior for identifying health risks in older adults.
7. The study emphasized using objective sleep measurements instead of self-reports.
8. The study did not investigate specific causes of death related to nap behavior.

Source: Sleep