Animals have evolved to sleep in extreme ways — for example, taking micro naps during parenting, sleeping on the wing during ...

Scientists already knew that the pair of shallow coastal ocean dwellers keep very different schedules of downtime: The ...

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

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

Group sleeping can impact when animals sleep, how long they sleep for, and how deeply they sleep. For example, groups of meerkats time their sleep according to 'sleep traditions'; olive baboons sleep ...

Some animals can sleep with just half their brain at a time. Understanding this phenomenon can help us learn more about human ...

Frigatebirds snooze in flight while penguins take four-second catnaps Emperor penguin chicks stand together in Antarctica. Penguin parents take thousands of catnaps a day while looking after their ...

Jellyfish and sea anemones display human-like sleep, supporting theories about sleep’s role in preserving neurons, even ...

Taylor worked with AP from 2018 to 2025, most recently as Google Editor. If you use a fitness tracker or smartwatch from one of a few prominent manufacturers — Google, Samsung, or Xiaomi — you've ...

Max Genecov is a doctoral candidate in clinical psychology at the University of Pennsylvania, a dad, and a stuffed animal owner. “I’ve always had them growing up, I had a big fantasy life with them ...

The Samsung Galaxy Watch is a fitness tracker used to measure your overall health through features like your heart rate, your workouts, and how well you are sleeping. The way the Galaxy Watch ...

Group sleeping can impact when animals sleep, how long they sleep for, and how deeply they sleep. For example, groups of meerkats time their sleep according to “sleep traditions”; olive baboons sleep ...