The science behind yawning and its mysterious behavior 03:38. Humans aren't alone when it comes to yawning — all vertebrates do it too, including fish, amphibians, reptiles, birds and mammals ...

The average adult yawns about 20 times a day.But why? Surely we can’t all be that tired. The truth is, the science behind yawning is more complex than just a few hours too little sleep.

We all do it: We all tend to start yawning when we see, or even hear, someone else yawning. A lion yawns in its enclosure at the zoo in Augsburg, Germany, on August 2, 2017. Karl-josef Hildenbrand ...

Bears do it, bats do it. So do dogs and humans. They all yawn. It's a common behavior, but why is a bit of a mystery. Researchers think yawning may perk up the brain and help with social bonding.

Interestingly, although yawning is a normal function, why it occurs excessively in some patients with brain damage or with multiple sclerosis is unclear. Answer originally published on August 12 ...

Yawning is not reserved just for rain frogs. It’s a very natural part of a process most frogs undergo during their juvenile years. While it may look familiar to us, a frog’s yawn is actually ...

Not everyone is equally susceptible to contagious yawning. In controlled studies, approximately 40% to 60% of typical volunteers yawned in response to watching another person yawn in a video.. A ...

Yawning may help cool down the brain. When temperatures in the brain rise above its baseline — because of increases in mental processing while focusing on a task, exercising or being anxious or ...

Does yawning mean our brains aren’t getting enough oxygen? Researchers believe yawning may serve an important physiological purpose. There is no consensus, however, on what that is.