The secret life of microbes | Alexander Claasen & Noah Kerler | TEDxDiscovery College Youth

[Applause] [Music] Your mood changes every day and for many reasons. But do you know the causes. Today we're going to discuss something quite fascinating.The small microbes in our body and how they affect our mood. That's correct, Noah. When we think about our bodies, we think mostly about organs, muscles, and bones.But we're also a host of trillions of microbes, mostly bacteria, that are living inside of our body. These microbes aren't just along for the ride. They're actively involved in many processes of ...