Yawning is a familiar gesture. It often appears when one is tired or when changing states of alertness, for example at the moment of falling asleep or waking up. However, it has a unique aspect: ...

Brain scans show yawning may push fluid out of the brain and boost blood circulation, hinting that yawns help refresh the brain.

Yawning isn’t just a deep breath indicating tiredness or boredom, but a process that reorganises the flow of fluids out of the brain, according to MRI scans that also suggest we each yawn in a ...

Q I have always liked how yawning feels and wondered what it’s for. I just read there is new information about how yawning affects your brain. Do you know anything ...