It sets off an alarm in the brain's amygdala, our fear center, where we are highly attuned to threats of all kinds. Once the amygdala sends out an alarm, we don't think-we act.

它对大脑的扁桃体敲醒了警钟，即我们的控制恐慌情绪的中心，它使我们习惯于各种各样的威胁。