Stretching releases endorphins, the body’s natural feel-good chemicals. Yawning, on the other hand, helps cool the brain and ...

Leading sleep expert Dr Sophie Bostock who has a PhD in Health Psychology and the person ... why we yawn, but there’s no one definitive answer. Yawning is often associated with stretching ...

It’s almost impossible not to yawn after seeing someone else do it, but most of us probably don’t know why it’s so hard to fight the urge. Anna Bartter asks the experts. Did you know that ...