About 9 months ago, we wrote about the “second brain” in your gut–the mass of neurons found in your intestine that you may not have even known about. In this talk, from food scientist Heribert Watzke, explains why evolutionarily we have this second brain in our gut, what it means, and what it does.

It starts a little slow, but stick with it and I think you’ll find that overall it’s an absolutely fascinating talk.