But Why?: Are Yawns Really Contagious?

Why are yawns contagious?

Why do we hiccup? How do teeth get loose? Why do your ears hurt when you drive up over the mountains? Why do we get dizzy when we spin? Why do people slip? Why do people faint? Why do we have saliva and mucus? Why do people cry when they get hurt? How do voice boxes work? Why does your voice sound weird when it’s recorded? Dr. Lori Racha has more answers to your body questions.

 

But Why is a show led by you, kids!

You ask the questions and we find the answers. It’s a big interesting world out there. On But Why, we tackle topics large and small, about nature, words, even the end of the world.


Anatomy & Physiology, Biology, Psychology
K-6, Middle School

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