Alcohol and sleep

Don't bet on drinking a glass of wine or two to help you sleep. A large observational study found that drinking before sleep might do the opposite. Researchers looked at data from 4,098 adults 18 to 65 in Finland who wore a special device to record their heart-rate variability in real-world conditions. The devices registered data on a night the subjects drank alcohol before sleep and a night they abstained.

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