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Global Study Warns Against Snooze Alarms for Better Sleep Health

Research reveals that hitting snooze disrupts REM sleep, leading to grogginess and reduced morning alertness, with experts advising single, well-timed alarms.

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People in the U.S., Sweden and Germany had the highest snooze button use. Credit: Neuroscience News

Overview

  • A six-month study analyzed over 3 million nights of sleep data from 21,000+ global Sleep Cycle app users.
  • Researchers found 56% of sleep sessions ended with snooze use, delaying wake-up by an average of 11 minutes.
  • Heavy snooze users, relying on snooze alarms over 80% of mornings, averaged 20 minutes between alarms.
  • Snoozing disrupts REM sleep, offering only fragmented light sleep, which impairs memory, emotional processing, and alertness.
  • Sleep experts recommend setting a single alarm for the latest possible time and maintaining consistent sleep schedules.