If your head is overheated, there's a good chance you'll yawn, according to a new study that found the primary purpose of yawning is to control brain temperature. The finding solves several mysteries ...

Ever noticed how one yawn can trigger many? Science reveals how your brain copies others, why yawns spread so easily, and ...

What is yawning? And why do we do so much of it? Neuroscientist and yawn expert Robert Provine says it's "ancient and autonomic." It stems from early evolution and is common to many creatures—even ...

Why do we yawn? We tend to yawn before sleep and after waking, when we are bored or under stimulated. We yawn in the anticipation of important events and when we are under stress. What do all of these ...

It is highly contagious and very common. You can catch it at any time, and there may be nothing you can do to prevent it. Sound scary? Fortunately, it, yawning, is not too harmful...unless you are on ...

Is it true that we yawn when our brains are deprived of oxygen? Most of us can feel a yawn coming on. The muscles in our jaw begin to tighten, our nostrils might flare, and our eyes might tear up as ...

Have you ever wondered why yawning is contagious? It may be a way to bond with your fellow human being, but scientists have other theories. We’re one sentence into this story and I’ve already yawned ...

Feeling tired? Even if we aren't tired, why do we yawn if someone else does? Experts have published research that suggests the human propensity for contagious yawning is triggered automatically by ...

The human body is full of mysteries. We often find ourselves questioning various reflexes. For instance, why do our eyes twitch? Why do we get a brain freeze? And why do we have hiccups? But among ...

Have you ever been in the middle of singing a beautiful song when suddenly, you feel an overwhelming urge to yawn? If so, you’re not alone. Many singers experience this frustrating issue, which can ...

TIME’s new health column, It’s Not Just You, explores the phenomena behind some of life’s most everyday yet baffling behaviors. If seeing someone mid-yawn makes you involuntarily stretch out your ...