Fear is a chain reaction in the brain that starts with a stressful stimulus and ends with the release of chemicals that cause a racing heart, fast breathing and energized muscles, among other things, also known as the fight-or-flight response. The stimulus could be a spider, a knife at your throat, an auditorium full of people waiting for you to speak or the sudden thud of your front door against the door frame.

“When people are frightened, intelligent parts of the brain cease to dominate”

Early exposure to circumstances that produce persistent fear and chronic anxiety can have lifelong effects on brain architecture.

This sudden surge of tension in the human brain destroys an individual’s ability to think rationally & logically which increase the pressure of fulfilling unfulfilled expectations.
Practically, anger can be a boon or a bane depending on how the individual uses their anger objectively & subjectively. As the human body is built in with energy, it is very natural that the human body emits heat waves. These heat waves are almost alike electricity. All heat waves are energy. The human body has electricity in it. With the sudden surge of either feelings of shock or regret or resentment or revenge, the individual starts to feel the heat waves that start to reach the hypothalamus in the human brain which stops working to its natural rhythm due to the excess heat which it cannot direct for meaningful purposeful objectives with ease. Excess heat to the brain causes it to behave erratically while the brains primary function stops to work which is to ponder over the ideas, people, events & things it sees, hears, smells, listens to & physically touches.