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An adrenaline rush can have devastating consequences, be it in performers paralysed by stage fright, or in police officers who make bad decisions in high stress situations.

Justin Rowlatt looks at what we can do to manage our fight-or-flight response in order to avoid panic. Interviewees include Travis Yates, a seasoned police officer who trains colleagues in how to handle the "adrenaline dump", violinist Emma Rushworth and her performance coach Charlotte Tomlinson, and endocrinologist Maralyn Druce of Barts Hospital.

Producer: Laurence Knight

(Picture: Freeze frame from the police video of the shooting of Philando Castile; Credit: Reuters)