From a baby to an adult, and even animals, yawning is one of those things that most of us do multiple times a day, especially ...

“Yawning often occurs when we’re tired – likely as a mechanism to increase oxygen intake and regulate brain temperature,” explains Dr Ann Nainan, a GP and founder of The Travelling Doctor.

Cue the yawn. The yawn is so much more than a signal of how tired we are. It’s also a symptom of boredom, an expression of rebellion, a facial workout, and an utterly contagious bodily function ...