New research published in the journal Sleep Health has found that sleep fragmentation, which refers to the amount of time ...

Strong circadian rhythms and good sleep may lower dementia risk. Learn how routines, exercise, and lifestyle habits support ...

In jellyfish and sea anemones, neurons accumulate DNA damage while animals are awake and repair that damage during sleep.

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in ...

Getting the recommended seven to nine hours of solid sleep a night is key if you want to remain rested and healthy. But what happens if you find yourself clocking in less, perhaps just four hours a ...

Sleeping fewer than 4.5 hours and more than 6.5 hours per night is associated with cognitive decline, according to researchers. In a recent study published in Oxford Academic's Brain, a team from the ...

In a recent study published in JAMA Network Open, researchers created the Sleep and Dementia Consortium, comprising five population-based cohort studies. Study: Sleep Architecture, Obstructive Sleep ...

Sleep is one of life’s most universal behaviors. Despite its ubiquity, it’s also one of the most mysterious. Humans spend ...

President Trump's first 30 days in office have been described as historic. Sleep, or the lack thereof. Since his first presidency, Trump has said he usually gets between four and five hours of sleep ...

This video segment adapted from NOVA scienceNOW considers the purpose of sleep and, in particular, the connection it shares with memory. By studying the dreams of rats, researchers are hoping to gain ...

Jellyfish sleep around eight hours a night, take short daytime naps, and compensate for lost rest,all without having a brain.