Ducharme is a contributor to TIME. Ducharme is a contributor to TIME. Have you ever slept a full eight hours but awakened feeling as tired as if you had pulled an all-nighter? If so, you may have ...

The frustrating cycle of hitting snooze and struggling through mornings despite adequate sleep duration affects millions of Americans. This disconnect between sleep quantity and morning alertness has ...

This bedside sleep assistant and alarm clock has changed the way I sleep ...

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Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. So you set your first smartphone alarm for 6: ...

Before you roll over, consider whether those extra minutes of sleep are truly restorative.

To learn more about our editorial approach, explore The Direct Message methodology. You went to bed at a reasonable hour. You slept through the night. Yet somehow, you woke up feeling like you ran a ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

Getting enough sleep is key to warding off a host of health issues. While falling asleep fast is the goal for some, and staying asleep is the dream for others, it’s normal for your sleep to change ...

Non-24-hour sleep-wake disorder (N24SWD) occurs when your sleep-wake cycle gradually shifts out of sync with the 24-hour day. It affects about half of blind people, but it can also affect those with ...