Poor Sleep: 8 Hours With Interruptions As Bad As Only 4 Hours (M)

Four 10 to 15 minute sleep interruptions in the night enough to leave people groggy and grumpy.

from PsyBlog https://www.spring.org.uk/2025/12/poor-sleep-8-hours-with-interruptions-as-bad-as-only-4-hours.php
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