We’ve all been there– sitting in a meeting, reading a book, or daydreaming when someone nearby yawns. Suddenly, you yawn too, ...

It also helps keep the body awake by stretching the face muscles, widening the jaw, and also stimulating blood circulation.

One theory is that by moving the muscles in the face and neck, yawning stimulates the carotid arteries in the neck, ...

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 ...