"Fight or flight" response during stress was first described in 1932 by one of the early pioneers in stress research Dr Walter Bradford Cannon - American professor physiologist from Harvard Medical School. "Fight or flight" response during stress starts working when human body experiences shock or perceives different kinds of threat – body quickly releases so called “stress hormones” that help to survive. Stress hormones mobilize body resources and help us to run faster and fight harder. Stress hormones increase heart rate and blood pressure - delivering more oxygen and blood sugar to power important muscles. At the same time, stress hormones increase sweating in an effort to cool hard working muscles (helping them stay efficient).
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