Even dolphins, playful and curious though they are, can get bored with life in an aquatic environment and apparently need to yawn to stay awake. Video footage captured a dolphin yawning underwater, ...

Yawning, which involves opening your mouth wide and taking a deep breath, is a reflex action that occurs when you are excessively tired or sleepy. A research team from the State University of New York ...

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 serves a ...

Yawning is a natural and involuntary reflex that has fascinated scientists and researchers for centuries. Photo credit: DALL-E While its exact purpose remains somewhat elusive, one intriguing aspect ...

It was once believed that yawning was a response to a shortage of oxygen in the blood. But that is an outdated theory, according to Takahiro Ohara, a professor of cognitive psychology at Iryo Sosei ...