A meta-analysis suggested that long naps (more than 60 mins) were associated with a 30% greater risk of all-cause death and 34% higher likelihood of cardiovascular disease (CVD) compared to no napping. When night-time sleep was considered, long naps were linked with a higher risk of death only in those who slept more than 6 hours per night. The analysis included 313,651 participants from more than 20 studies, 39% of participants took naps. Overall, naps of any length were linked with a 19% elevated risk of death. The association was more pronounced in women and older participants. However, the analysis also suggested that shorter naps (especially < 30 to 45 minutes) might improve heart health in people who slept insufficiently at night. Source: https://www.eurekalert.org/
