The human body is one of the most complex and fascinating machines ever studied, yet there’s still so much we don’t ...

You know the feeling. It’s getting close to bedtime, you get sleepy, and you start yawning automatically. You may even find ...

Tiredness, sleep deprivation, or certain medications usually cause yawning. If you find yourself yawning much more than usual on a daily basis, there could be more than tiredness or boredom going on.

This observation reminded her of certain human behaviors—including contagious yawning and the tendency for people to go to the bathroom in groups. “In Japan, my home country, there is a ...

Bournemouth University neuropsychologist Simon Thompson is an expert on yawning. In 2011, he posited that high levels of the stress hormone cortisol may be a direct cause of yawning. “We believe that ...

Here are some fast facts on why we yawn and why yawning can be contagious – even between dogs and humans and over the phone. This reflex occurs most often due to state change, i.e. during ...

Content, zero. Style, zilch. Marriage consumated. This guy is the Human Yawn. So let's look at his story: As 25-year-old Roger Federer was stroking his way to third-straight US Open title to ...