Snoozing for extra hours before a period of sleep deprivation can help keep you more alert and improve performance.

Discover how much sleep you really need by age, why consistency matters as much as duration, and how sleep deprivation ...

That’s the takeaway from a new study of almost 15,000 active men and women. It found that exercising within about four hours ...

Moreover, the researchers also discovered that in all 20 countries involved in the study, people appeared to be sleeping at least one hour less than what was considered optimal for their culture, ...

Most U.S. states and many countries follow daylight saving time. During daylight saving time, clocks are turned forward by one hour. Later, they're turned back. For example, in the U.S. daylight ...

While having sleep timers bundled ... Clock app and head over to the "Timer" page. Once you're there, set the timer on that page to your desired length — one hour is usually all I need, but ...