Coffee causes 'shallow' sleep without you noticing, brain scans show

Researchers from Wroclaw Medical University suggest that caffeine consumption can lead to 'shallow' sleep, even if individuals do not experience difficulty falling asleep. EEG scans indicate that the brain may fail to fully regenerate during rest if caffeine is not properly metabolized before bedtime.
Why it matters
It challenges common perceptions about caffeine intake and sleep quality, emphasizing the importance of timing for cognitive health.
For caffeine fiends or anyone prone to an afternoon slump, how late in the day to drink coffee has long been an open question.
The article summarizes scientific findings without taking a stance on coffee consumption, focusing on the research data.
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