Frigatebirds can remain airborne for days at a time without landing. Here’s how they rest while flying, according to ...

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 ...

(CNN) — 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 ...

An upside-down jellyfish drifts in a shallow lagoon, rhythmically contracting its translucent bell. By night that beat drops ...

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 ...

Editor's note: Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Max Genecov is ...