I'm going public about my nap habit now because, despite what bureaucrats may think, sleep scientists are increasingly clear about the power of the nap.
Short naps do indeed have cognitive benefits, says Michael Chee of the Center for Sleep and Cognition at the National University of Singapore. In a 2022 analysis, his team found especially significant improvements in certain kinds of memory, information-processing speed and vigilance (the ability to respond to an unexpected event, say, a swerving car).
No one talks about mood enough, but, Chee says, tired people tend to be grumpy.
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