A GP explains the main reasons why we yawn – including the factors that can lead to excessive yawning (apart from tiredness). Welcome back to Just Curious, Strong Women’s weekly series ...

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.

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 ...

But why? Surely we cannot all be that tired. The truth is the science behind yawning is much more complex than just a few hours too little sleep. Even more complex? Why we seem to yawn because ...