Seeing a recording of yourself can be transformative. You see yourself as the world sees you.
The study was ran on 32 participants, students that are highly anxious when it comes to public speaking. The aim of the study was to test the predictors of public speaking anxiety.
When humans are confronted with potentially dangerous situations (either mentally or physically) a fight or flight reaction is experienced. This is also known as an acute stress response. Biologically this results in an increase in heart rate, blood pressure and breathing rate.