Awesome Immunity

Do you suffer from allergies? From flowers to shellfish, our bodies can react with anything from a sneeze to anaphylactic shock. Kurzgesagt digs into what causes our bodies to reject things that seem like they should be totally harmless. It’s an unexpected explanation, but it may be a remnant of how our bodies evolved to fight off parasitic worms.

The way you feel when you have a fever can really suck. But our bodies are doing some very important things by raising our temperature when we’re sick. Kurzgesagt explains why we get fevers and how they help fight off infections. Along the way, they explore the pros and cons of suppressing fevers with medicine.