The analogy of a car is useful for explaining the effect of Fight or Flight on your body. Flight mode is our Sympathetic nervous system kicking into action, 'accelerating your car' - and Fight mode is the Parasympathetic system, which 'hits the brakes hard'. Two key nervous systems are acting against each other, so that neither is functioning well. We call this Sympathetic Dominance, as the flight instinct over-rides the functioning of the body's rest and repair processes. It results in stressed, anxious exhausted people... and we want to help!