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

They identified two states: a “normal” one and a quiet state. When they were in this quiet state, the jellyfish were much ...

Sleep may have evolved to help reduce DNA damage in nerve cells long before they became centralized in the brain, a study ...

A new study analyzed the sleep patterns of jellyfish and sea anemones and found they share some sleep traits with humans. The ...

What has puzzled researchers and philosophers for many centuries is the ‘why’ of sleep, along with the ‘how’. We human animals know from experience that we need to sleep, and that the longer we go ...

Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep. Sleep is universal “even though it’s actually very ...

As anybody who's cuddled up to a slumbering cat or dog can tell you, pets have a profoundly relaxing, restful effect on our ...

As every seasoned cat parent knows, cats sleep a lot. Chances are your furry feline is presently snoozing. Cats sleep so much that many new parents become concerned! However, in most cases, it is ...

You’ve probably heard about early birds and night owls. Both are references to sleep chronotypes, or the body’s natural inclination to be awake or asleep at certain times. “Your chronotype is driven ...

Every animal with a brain needs sleep – and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep.Sleep is universal "even though it’s actually very ...