Effects of evening coffee on the brain

A recent study examined the impact of drinking coffee in the evening on sleep quality, confirming that caffeine's effects are not limited to reducing sleep duration only but also have a greater influence on the brain's activity during the night. The research showed that caffeine decreases slow-wave activity associated with deep sleep, which hampers the body's renewal process and brain rest, even though some individuals continue to sleep for normal durations. The findings emphasize that genetic factors, metabolism, age, and stress play significant roles in how individuals react to caffeine, resulting in varying effects from one person to another.

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