My take? As you may know, I’m an enthusiastic supporter of napping. We’ve long known that it boosts alertness and productivity. The National Sleep Foundation reports that dozing off for 20 to 30 minutes is the ideal amount of time to sharpen your alertness. Longer naps can leave you feeling groggy and can interfere with sleep at night, although sleep experts say that an hour-long nap can help your memory for facts, places and faces, and a 90-minute nap has been found to boost creativity.
Source:
Han Cai et al, “Relationship between afternoon napping and cognitive function in the ageing Chinese population.” General Psychiatry, January 25, 2021. DOI: 10.1136/gpsych-2020-100361
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