When to Stop Drinking Alcohol Before Bed
About 3–4 hours before bedtime. A nightcap can knock you out faster and still ruin your sleep. Here is when to take your last drink so your night recovers.
Your time
6:30 PM
Keep your last drink to here — 3 to 4 hours before bed. Alcohol may speed sleep onset, but it fragments the second half of the night and suppresses the REM sleep your brain needs.
The science
Alcohol is a sedative, so it can speed how fast you fall asleep — which is exactly why it feels harmless. But as your body clears it overnight, it fragments the second half of the night and suppresses REM sleep, the stage that does much of your mental and emotional recovery.
Giving your body 3 to 4 hours to metabolize that last drink before bed softens the hit. That cutoff is tied to your bedtime, which the tool derives from your wake time.
Frequently asked questions
Why do I sleep worse after drinking even if I fall asleep fast?
Alcohol helps you fall asleep but then disrupts the back half of the night as it wears off, suppressing REM and causing more awakenings. Falling asleep quickly and sleeping well are two different things.
Does the amount matter or just the timing?
Both. Less alcohol and an earlier last drink each reduce the damage. Spacing your final drink several hours before bed gives your body time to clear it before you are trying to get your deepest sleep.
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