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Morning Naps 30% Riskier, Extra Hour Adds 13% Mortality

4/23/2026

28 7 Full Breakdown

Summary

Story summary

Researchers at Mass General Brigham tracked 1,338 older adults with trackers for 19 years to record nap timing and duration.
Each extra hour of daily napping raised all-cause mortality risk by 13 %.
Morning naps carried about a 30 % higher mortality risk than naps taken at other times.
The authors warned findings are correlational, limited to older White adults in the Midwest, and based on movement-based trackers rather than brain-activity data.

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Story summary

Researchers at Mass General Brigham tracked 1,338 older adults with trackers for 19 years to record nap timing and duration.
Each extra hour of daily napping raised all-cause mortality risk by 13 %.
Morning naps carried about a 30 % higher mortality risk than naps taken at other times.
The authors warned findings are correlational, limited to older White adults in the Midwest, and based on movement-based trackers rather than brain-activity data.