what is adrenaline?
5 Symptoms of an Adrenaline Rush. An adrenaline rush is an extremely intense feeling. Adrenaline is a natural hormone that is produced by the body and secreted throughout the body when you undergo some type of traumatic experience. For instance, if you are attacked by a dog or you get into a fist fight, you will notice an energetic feeling that gives you the power and strength to either escape or to attack.