Stress is a kind of physical, mental or emotional demand which disturb the homeostasis of the body, is the state of increased arousal necessary for an organism to defend itself at a time of danger, alterations of hormones in the body include not only adrenaline, but also substances like testosterone and human growth hormone. Up to a certain point stress is beneficial. We perform with greater energy and increased awareness with the influx of excitatory hormones that release immediate energy.