Adrenaline and noradrenaline hormones the body produce to prepare the body for quick physical action.The primary function of adrenaline also known as epinephrine and noradrenaline, two hormones secreted by the adrenal glands, is to get the body prepared for a "fight or flight" reaction under pressure.
The main effects of adrenaline include speeding up breathing, raising blood pressure, widening the pupil of the eye, lessening pain sensitivity, improving vision, hearing, and other senses, slowing digestion, rerouting blood to the muscles, and changing the body's metabolism to maximise oxygen and nutrients to the body and raise blood glucose levels (primarily for the brain).
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