What’s the difference between eustress and distress? what happens to the body if stress continues over a long period of time?

A good answer should contain the following:

   Eustress keeps us alert and helps us face challenges, such as finding a new route to work or school or getting to the movies on time. Eustress can sometimes actually result in improved performance. The “bad” type of stress, or distress, results when we physically and mentally overreact to events.

   If stress continues, the third stage, the exhaustion stage, kicks in. At this stage, the body becomes very susceptible to disease, because it seems to lose its ability to respond to any new stress. All the body’s systems, including the cardiorespiratory, endocrine, and immune systems, have been “stretched” to their limits attempting to handle stressors and are fatigued. Prolonged stress can lead to heart and lung disease, increase symptoms of kidney disease or diabetes, prolong a cold or flu, or make you susceptible to every infectious disease that comes through the air. Prolonged stress can adversely affect a person’s ability to learn, make decisions, interact with people, and exercise. Prolonged distress is a bad thing, and the human body and mind aren’t meant to handle it.