Hitting the Snooze Button
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In a two-part study published in the Journal of Sleep Research, scientists surveyed 1,732 individuals and found that 69 percent use the snooze feature on their morning alarm, and of those people, 60 percent usually or always fall asleep between alarms. Snoozing is more common among younger people and night owls. For those using this feature, drowsiness and shorter sleep is more common.
The study also sought to determine the effects of snoozing on 31 habitual snoozers. The first morning, the participants repeatedly hit the button to gain 30 extra minutes, and on the second morning, the participants got up on the first alarm. The researchers reported that 30 minutes of snoozing either improved or did not affect performance on cognitive tests administered directly upon rising, as compared to an abrupt awakening. There were no clear effects from snoozing on cortisol awakening response, morning sleepiness, mood or overnight sleep.