Stomachs growl, noses run, and yawning is contagious: Ever wonder why?
Stomachs growl, noses run, and yawning is contagious: Ever wonder why? Why do you yawn? Perhaps you associate yawning only with being tired or bored. While we don’t know exactly why people yawn, there’s no shortage of theories. Yawning may It’s also unclear why yawning is