Focus
Alcohol Sleep Buffer Window
An alcohol sleep buffer window sets minimum hours between last drink and bed—protecting REM and overnight heart rate like a caffeine cutoff.
An alcohol sleep buffer window is the minimum hours between last drink and lights-out—often three to four, longer for sensitive sleepers—so ethanol does not suppress REM and elevate overnight heart rate. Athletes treat buffers like caffeine cutoffs before key sessions.
A drink at 9 p. m.
with 10:30 bed still violates the buffer.
Common questions
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Does a buffer help if you only had one drink?
One drink close to bed still fragments architecture for many people. Buffer rules focus on timing, not moralizing moderate amounts.
Related terms
Put Alcohol Sleep Buffer Window into practice
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