 My best friend is a neuroscientist the back of our head is that he always says you got to brainstem here all the way up here is all the primitive and when we get scared and stress we start operating without thinking by breathing slower you activate the front of the brain called the mpfc a medium prefrontal cortex which is where we logically can think things through so one of the reasons to breathe is to change the synaptic you kind of the neurons to fire up here don't fire back here