Some individuals sleep just minutes a day. And keeping flies awake does not have untoward effects on longevity.

People who have suffered traumatic brain injury had slower reaction times and more false starts after disrupted sleep than well-rested controls, according to a study presented at the Society for Neuroscience meeting.

A protein in skeletal muscles helps mice recover from sleep deprivation.

Scientists still don’t know why animals sleep or how to define the ubiquitous behavior.

Poor slumber during pregnancy may have consequences beyond gestation.

The far-reaching effects of sleep loss

Researchers have identified a gene that ties sleeping patterns to the winter blues experienced by many people living at extreme northern and southern latitudes.

Circulating fats and acids drop in people and rats that aren’t getting enough sleep.