By the 1990s, stress had become an integral part of modern life. Because of the abundance of stress in human being, we used to think of stress as a negative response to on every unexpected situation, but from a biological point of view, stress can be a neutral, negative, or positive experience. Stress can either let us learn and grow or cause us troubles.
Stress has operated evolutionary change and natural selection. Thus, the specimen that adapted best to the causes of stress (stressors) have survived and developed on the planet.
Human being is the most adaptive creature because of the evolution of the human brain. This adaptability has been happening mostly due to the changes and stressors. Therefore, mankind can exist in any climate or ecosystem. So, is stress so bad?
Stress is created when we react to particular events. It covers a wide range of feelings, from mild irritation to drastic dysfunction. It's the body's reaction of a change or problem and preparing to meet a hard situation with alertness, strength and stamina.
There are external and internal factors entailing stress. External factors include our environment, including our job, relationships, home, and all daily situations, challenges, difficulties and expectations. Internal factors which influence our ability to react to stress include our nutrition, health and fitness levels, emotional condition, and the amount of sleep and rest as well.