Recall your learnings in the Panorama, when you think or sense that you may be in danger or under threat, your SNS will immediately increase your heart rate and respiration to prepare you for fight or flight. When your SNS is aroused, you may feel a surge of energy or feel a little shaky, and alert. This is the adrenaline that is activated in your body to prepare you for fight or flight.
Recall the Parasympathetic Nervous System (PNS) functions to calm the body. You might like to consider a time when you felt fully relaxed, totally safe and secure, recall the feeling of calm, the stillness in your mind and body. This is the PNS helping your body to feel calm.
To counter an SNS response, the PNS can be activated by slow, deep breathing. When stress is experienced, your SNS is aroused, therefore one of the most effective ways to alleviate stress is to purposely activate your PNS by facilitating slow deep breathing.