RESPONDING POSITIVELY TO AMYGDALA HIJACK Emotions associated with fight or flight response, for instance; anger or fear are activated in the primitive part of our brain called the ‘amygdala’. When the amygdala perceives a threat, it can lead that person to react irrationally and destructively. Adrenaline and cortisol hormones are released. Adrenaline increases your heart rate, elevates your blood pressure and boosts energy supplies. Cortisol, the primary stress hormone, increases sugars