Excessive yawning may simply mean that you’re tired, drowsy, or fatigued. However, it can also be a sign of a medical condition, such as sleep apnea, narcolepsy, or a reaction to a medication.

Why Do People Yawn More When They Feel Tired. A tired brain is an inefficient one, and its energy levels go down. Thus, the body might resort to yawning as a weapon against fatigue.

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.

Another hypothesis is that we yawn because we are tired or bored. But this, too, is probably not the case because the PVN also plays a role in penile erection, which is not typically an event ...

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 ...

A big yawn, a big breath, gets you oxygenated when you’re tired. But this is another place where common sense, and this medical-sounding explanation, turn out to be wrong.

He said many things associated with yawning, like being tired, actually make the brain hot, and yawning can alleviate the heat. "Extended periods of sleep deprivation raise brain temperature and ...

Yawning in response to yawning could be a way of demonstrating empathy as in "oh, you are tired? So am I." or "you believe our date is dull, so do I. We clearly have something in common." ...

There is something you do when you’re tired, aroused, bored, or even hungry, but nobody completely understands why. Get your mind out of the gutter, I’m talking about yawning. We do it every ...

Scientists from City St George’s, University of London created a terrifyingly realistic android head to determine whether ...

Yes. You’re probably going to yawn while you read this. Writing this piece, and reading research on yawning, I’ve been yawning nonstop, uncontrollably. And it's not because research on yawning ...