As the individual is called upon to adjust to changing situations, the greater the stress which is acquired. Stress is a combination of factors that affect each individual differently. That which is stressful to one person, may not be so to another, and reactions to stressors vary among individuals.
Stress can manifest itself in ways psychological, physiological and behavioral.
For all the negative publicity it receives, stress is not necessarily a bad thing. It is not always harmful and can result from pleasant experiences as well as unpleasant ones. The human body perceives excitement in much the same way it perceives fear. Both emotions produce stress, which in turn affords the body an extra boost of energy. The physical attributes of stress, which include elevated heart and breathing rates, together with increased adrenaline flow, improve muscle strength and energy levels.