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

While there’s no precise cause of yawning, it’s often viewed as a natural response to being tired. In fact, sleepiness or fatigue usually trigger it. It’s natural to yawn late in the day as ...

“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.

According to veterinarian Andrés Santiago - unlike humans who normally yawn simply because we are tired - there are many ...

The average adult yawns about 20 times a day. 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.

So, why do we yawn when tired? Yawning is sometimes associated with fatigue, and given that you’re more likely to feel drowsy in warm temperatures, the links appeared to make sense. Some tests ...

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 ...

You know the feeling. It’s getting close to bedtime, you get sleepy, and you start yawning automatically. You may even find yourself yawning in the middle of the day in a mid-day lull.