Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. A restless night may leave you feeling tired ...

You can live for years with obstructive sleep apnea and never know it. The condition repeatedly narrows your upper airway ...

Across the United States, a sweeping new body of research is drawing a stark line between how much we sleep and how long we live. By zooming in at the county level, scientists are finding that ...