Researchers found that sleep needs can vary by region—and culture plays a bigger role than you think. If you’ve exhausted ...

Infants spend the majority of their first months in a sleep state, though their sleep cycles are very different from adults. Newborns sleep between 14 to 17 hours a day but they don’t sleep for ...

The average sleep time ... six and a half hours of sleep a night to feel well rested had. Family members who inherited one copy of this gene had a shortened sleep cycle. Generally, people with ...