Post-traumatic stress disorder can cause persons suffering from it to feel that danger is everywhere for they think that the world may no longer be a secure place for them when they experience something traumatic. The person can be regularly be in the state of anxiety and fear. Because of this, cognitive behavioural treatment that varies in the way the patient interprets their own environment is needed. The other way of taking a step back from thoughts is being mindful which then can lessen the power to activate the fight or flight response. (Youngdiggers, n.d).Human behavior is evolving from time to time. A thousand years in the past may not be as helpful today because behavior adapt s to the environment and changing times, although it never completely forgets its origin. (Grohol, 2012). Another term for the fight or flight response is “acute stress response”. It is also stated that when a person perceived threats or danger, the sympathetic nervous system will generally discharge and will eventually lead to fighting or fleeing. It is a physiological response that occurs when a person is in danger. (Cannon, 1929). As what (Bloom, 1999) says that “as we become exposed to a lot of danger we became more sensitive to it allowing our minds to form networks of connection which get triggered whenever we experience new traumatic danger”. That’s why when a person is exposed to danger repeatedly, the body becomes sensitive that even minor threats can trigger physical, emotional, and cognitive response.Moreover, during this processing of the sympathetic nervous system into our mind and body catecholamine hormone such as the adrenaline is released, increasing the heart rate, blood pressure, and breathing rate to prepare the body to more violent actions. Thereby, enabling us to physically fight or run away when we are in danger. When the threat is gone, everything returns to its normal function, but in times of chronic stress it can result damage to the body. (Youngdiggers, n.d).To further explain, we can’t understand more about what happens in fight or flight response syndrome without discussing the difference between fear and anxiety. Whenever we are in a dangerous situation we experience the emotion called “fear”. While the experiences leading us up to a dangerous, threatening situation or stress is called “anxiety”. One of the very helpful response is anxiety and fear because it provides us with data and facts. Anxiety and fear response prepares us to act in case we’ll be in distress or when the danger itself is just right infront of you. Whenever we are experiencing stress, fear, anxiety and whenever danger surrounds us, several changes happens in our body. The changes that we’ve been going through is a part of fight or flight disorder (Youngdiggers, n.d) A very helpful response that provides as information Is called “Anxiety” and “fear”. Whenever we are facing a dangerous Anxiety, fear and dangerous situations can have a several changes in our body. However, when we experience fear and anxiety it does not always occur in situation when we are in immediate danger. The difference between the imagined threat and real danger is cannot always be determined by our body and mind because we are not concerned with making clear thought about the consequences of those choices. All of our attention are focused on impermanent survival in the present time (Bloom, 1999). Therefore, whenever we interpret a situation, our body will physically respond immediately like we are in danger and threat, even though we’re not in danger (Youngdiggers, n.d).