Long sleep + long nap pattern

Long sleep + long nap pattern raises the risk of mortality in humans (HR 3.048, p < 0.001).

“The "long sleep + long nap" pattern (>8 h nighttime sleep + ≥60 min nap) was associated with the highest risk of all-cause mortality (hazard ratio = 3.048, p < 0.001).”

Humansadjusted for covariates2 yearsn = 11,054

Nighttime sleep, midday napping, and mortality in Chinese older adults: A China Health and Retirement Longitudinal Study longitudinal cohort study

The Journal of international medical research·6 Aug 2026