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A comment on Benefits of Napping in Healthy Adults (2009) [pdf]. Parent comment
https://www.youtube.com/watch?v=8hAw1z8GdE8
IIRC, the professor explained that if you fall asleep faster than around 10-15 minutes, you're probably sleep deprived and need to sleep more.
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https://www.youtube.com/watch?v=8hAw1z8GdE8
IIRC, the professor explained that if you fall asleep faster than around 10-15 minutes, you're probably sleep deprived and need to sleep more.