This process can happen whether or not we are in real danger or whether or not someone really hurts us or we simply perceive that they did. Unforgiveness can keep our bodies and brains in this state of high alertness and leads to these unhealthy results. When the amygdalae are activated, a series of bio-chemical processes begin. The adrenal glands that lie on top of our kidneys release the stress hormone cortisol into our bodies and the brain releases neurotransmitters into the brain. Those in turn activate part of our nervous system called the sympathetic nervous system. When this system is activated, among other things, our attention gets highly focused on survival, our digestive system stops, our pupils dilate, our saliva glands slow, our blood pressure and heart rate increases, and our muscles are readied for action. Our body prepares itself to fight, flee, or freeze.