It’s no secret that a good night’s sleep plays a vital role in mental and physical health and well-being. The way you feel ...

You stare in the dark at the numbers glaring back at you on your alarm clock. It is 3 a.m., and the makings of another night of interrupted sleep and frustration are apparent. As you contemplate ...

Acute insomnia lasts from one night to a few weeks. Insomnia is chronic when it happens at least three nights a week for three months or more. Adults need seven to nine hours of sleep every day.

Although light and dark have the most significant influence ... School-aged children need about 9 to 12 hours of sleep a night. Teenagers experience a shift in their circadian rhythm known as ...