🥱 Did you know that yawning could be your brain's natural air conditioning system? 

Studies show that the act of yawning introduces cooler air into our bodies, which can help reduce our brain temperature. 

Yawning is not just a signal that we are feeling tired—it's a sophisticated physiological response to help keep our brains cool!

💬 In this note:

* 🥱 Why Do We Yawn?

* 📚 Three Body Problem

* ⚡️ Digging a Tunnel Through Earth

Links:

Dr. Matthew Walker’s podcast episode, Yawning Explained.

The Three-Body Problem by Liu Cixin, translated by Ken Liu

The Dark Forest by Liu Cixin, translated by Joel Martinsen

Atlas Obscura’s maps of the antipode (the direct opposite) of the continents of Earth.

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