Sleep
Alcohol Deep Sleep Threshold
An alcohol deep sleep threshold is the personal dose or timing limit that preserves slow-wave sleep—often zero drinks within hours of bed.
An alcohol deep sleep threshold is the dose or timing below which slow-wave sleep stays mostly intact for you—often zero drinks within three to four hours of bed, but individual. Above the threshold, deep sleep percentages fall on wearables even when duration looks adequate.
Hard training weeks lower tolerance further. Track your threshold with staged experiments, not generic rules.
Common questions
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Can one beer before bed ever be fine?
Some people tolerate early small pours; others lose deep sleep from any nightcap. Run a two-week A/B log instead of assuming you are the exception.
Related terms
Put Alcohol Deep Sleep Threshold into practice
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