 The gut and the brain are connected via the vagus nerve. And what I found really interesting is it's like a kind of modem, like this big wire that plugs into your amygdala, which is your fear center in the brain, and then goes all the way around your gut and vital organs and plugs into the adrenals. So at one end, you've got fear. And the other end, you've got fight or flight. The communication going from the brain to the guts or downwards, if you like, is actually only 10%. Whereas the communication, the signaling going from the gut to the brain is 90%. They literally talk to each other. And if you've got imbalances in the gut, the signaling is going to be intercepted. It's not going to be clear.