Previously, we found that a 1.5 hour afternoon nap could improve performance in sleep-deprived adolescents. Interestingly, we also found that this split sleep schedule benefits learning after a nap opportunity without impairing morning learning, despite less sleep the night before. While not replacing adequate nocturnal sleep, a split sleep schedule may be beneficial for chronically sleep restricted learners.

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In 2019, NFS5 aimed to uncover whether napping is still beneficial when participants are getting enough sleep overall, but apportioning the total amount of sleep between daytime naps and nocturnal sleep.


Cognitive effects of split and continuous sleep schedules in adolescents differ according to total sleep opportunity

Memory performance following napping in habitual and non-habitual nappers

Splitting sleep between the night and a daytime nap reduces homeostatic sleep pressure and enhances long-term memory

Multi-night validation of a sleep tracking ring in adolescents compared with a research actigraph and polysomnography

Staying vigilant during recurrent sleep restriction: dose-response effects of time-in-bed and benefits of daytime napping

A sleep schedule incorporating naps benefits the transformation of hierarchical knowledge