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 ...

Wolves may be susceptible to yawn contagion, according to a new study. Researchers suggest that contagious yawning may be linked to human capacity for empathy, but little evidence apart from studies ...

Italian scientists who documented humans interacting in everyday situations have found that women are more susceptible to catching the urge to yawn from others than men are. The findings, published in ...

Why do we yawn? Yawning is a universal gesture. Everyone yawns, from babies still in their mother's womb to the elderly. However, the exact reasons for this reflex are not well understood. Is it just ...

Contrary to common belief that the yawning contagion is associated with empathy, it is in fact, more likely that perceptual sensitivity is to blame, research suggests. Contagious yawning is a ...

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.

We have all been there: someone is speaking to you or you are in the middle of a meeting and a yawn signals its arrival. What do you do? A yawn is commonly thought to indicate fatigue, or worse, ...

Researchers believe the yawning robot may have triggered some biological mechanism in the chimps that they associated with sleep. Image: Popular Science composite, Getty Images/ RMJM, Aline ...