daylight saving time
Researchers who study sleep now have a few theories about why we spend one-third of our lives in dreamland.
This is the first study to look at the link between toddlers' touch-screen use and sleep, the researchers said.
People who are in a deep slumber may not be able to say whether they're dreaming, but their brain waves might.
Get ready to "spring forward" as people throughout the United States lose an hour of sleep in the early morning of Sunday.
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