Why we snap

We all have a rage circuit we can't fully control once it is engaged. The headlines are filled with examples of rational people with no history of violence or mental illness suddenly snapping in a domestic dispute, barroom brawl, or road-rage attack. We all wish to believe that we are in control of our actions, but the truth is that the right trigger in the right circumstances can unleash a fit of rage in almost anyone. Neurophysiologist R. Douglas Fields reveals and details for the first time the nine triggers that cause us to snap and how we can defuse them. But there's a twist: the same…