https://super-memory.com/articles/sleep.htm
Article
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Long-form 2012 article on sleep’s role in memory consolidation and learning
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Covers REM cycles, circadian rhythms, and optimal sleep conditions
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Advocates sleeping only when truly tired, waking naturally without alarm
Discussion
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Many commenters shared personal sleep struggles: insomnia, nightmares, apnea
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Strong endorsement of cheap at-home sleep apnea finger tests for everyone
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Alcohol disrupts sleep quality even in small amounts; sets back learning by days
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One commenter noted consistent bedtime matters more than duration
Discuss on HN