Humans aren't alone when it comes to yawning — all vertebrates do it too, including fish, amphibians, reptiles, birds and mammals. But why? The "evolutionarily ancient" act of yawning likely ...

Brits have been forced to stifle a yawn in a work meeting, when listening to a friend tell a story – and in a job interview. A study of 2,000 adults revealed the 30 most awkward moments they ...

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 ...