In response to a stressful situation, the brain sends nervous impulses to the adrenal glands (above the pancreas), from which adrenaline is released into the blood. Adrenaline makes us more able to react quickly and vigorously to situations which might require us to run away or to fight.
Singers combine vocal and relaxation techniques to combat the negative effects of adrenaline, while harnessing the positive effects to heighten the drama of performance for the audience.
