Dogs and cats often don't make the best bedmates. But pet owners often choose sleep deprivation over isolation from their ...

With significant selective pressure, animals may deviate from their inherited sleep cycle. Without it, there would be no need to adapt and change from the state of our direct evolutionary ancestors.

A study found that people over 60 who didn’t get enough slow-wave sleep — the third stage in the human sleep cycle — were at a higher risk of developing dementia.

Researchers examined the differences in circadian biology between the ancestors of modern humans and the archaic hominins such as Denisovans and Neanderthals and the ...

To optimize productivity, maintain a consistent sleep schedule, avoid disruptions, and aim for 7-9 hours of quality sleep per night. By making sleep a priority, you can improve your health, increase ...

Though most modern societies sleep in one continuous bout overnight, experts debate whether that sleep cycle is natural for humans.

For a long time it was thought that fish don't sleep, and truthfully, they don't sleep like we do, but they do engage in regular periods of rest.

This hormone controls our circadian clock the body's natural sleep-wake cycle, which repeats daily and induces drowsiness.

Why might a person start randomly falling asleep? Read on to learn about many possible reasons why a person may start falling asleep.

New research suggests jumping spiders have sleep cycles similar to those of humans, which could help us better understand why we dream. Daniela Rößler at the University of Konstanz in Germany ...

A new study has identified for the first time signatures of sleep in the honey bee brain, showing remarkable parallels with sleep in humans and other vertebrates. It combined advanced optical ...

Do octopuses dream of electric eels? Brainwave studies find octopus and human neural similarities Researchers glimpsed REM-like reverie in one of the ocean's most brilliant creatures and saw human ...