Teens need eight to 10 hours of sleep each night. A large majority get less than that, according to a national survey of U.S. high school students.

Researchers call for later school start times, as only a fraction of teens are getting the recommended amount of sleep ...

Most sleep advice is incomplete. Here are 12 science-backed techniques that actually work, ranked from easiest to most involved.

Does extending your sleep in the week prior to an upcoming period of sleep deprivation work to keep you more alert?

— Children 1 to 2 years old: 11 to 14 hours — Children 3 to 5 years old: 10 to 13 hours — Children 6 to 12 years old: nine to 12 hours — Teenagers 13 to 18 years old: eight to 10 hours “Sleep is ...

Short sleepers, who make up less than one per cent of the population, spend significantly less time snoozing without any apparent health consequences.

Sleeping for 7 hours and 18 minutes every night may be the sweet spot for warding off the risk of insulin resistance—the ...