``` Human Body • Science • Mental Health • Nutrition Your Gut May Be Making Decisions Before Your Brain Does Meet the “Second Brain” Living Inside You Why does stress upset your stomach? Why do you get butterflies before speaking? And can the food you eat influence your mood, anxiety and mental wellbeing? ``` Have you ever had butterflies before giving a presentation? ``` Or suddenly needed the toilet before an important examination, interview, meeting or speech? Have you ever lost your appetite after receiving bad news? Congratulations. Your brain and your gut have just been having a private conversation. ``` No, you are not growing another head. But deep inside your digestive system is an enormous and sophisticated network of nerve cells that can operate, communicate and respond without waiting for detailed instructions from your brain. Welcome to the fascinating world of the gut-bra...