Adrenaline is the bodies rapid response mechanism in answer to stress: increasing blood flow to the musclues and the brain, increases breathing, heightened cardiac rhythm, and releases more sugar into the blood flow.

Catecholamines release in to the blood whenever a situation of stress such as psychological stress or low blood sugar levels. The part known as sympathetic nerve of the autonomous nervous system orders the discharge of adrenalin, which involves:
* The stimulation of the cardiovascular apparatus: acceleration of the heart, increase in the force and amplitude of the cardiac beats.
* An arterial hypertension. Contraction of the vessels and the dilation of the coronary arteries (arteries irrigating the myocardium: cardiac muscle).
* Increased glycemia (sugar supply in blood).
* Increased mydriase (dilation of the pupils).
* A vasoconstriction (narrowing of the blood vessels).
To the Adrenaline Junkie the automated process of the nervous system is what causes adrenaline to be released which in turn gives the adrenaline seeker a sudden rush throughout the body. This rush is what some consider as our own natural drug supply and some push the adrenaline limits to the extreme to get there next fix!

