Notas del episodio
Ever wondered why we yawn? Why is it contagious? Is it really rude to yawn in public or is it just a form of non-verbal communication? The boys get into all these questions and more on this weeks episode of The Why Debate
Palabras clave
why do we yawncontagious yawnwhy is yawning contagioussecret languagenonverbal communicationbiologybrain