Taken from the American Institute of Stress at www.stress.org
"Stress is difficult for scientists to define because it is a subjective sensation associated with varied symptoms that differ for each of us. In addition, stress is not always a synonym for distress. Situations like a steep roller coaster ride that cause fear and anxiety for some can prove highly pleasurable for others. Winning a race or election may be more stressful than losing but this is good stress.
Increased stress increases productivity – up to a point, after which things rapidly deteriorate, and that level also differs for each of us. It’s much like the stress or tension on a violin string. Not enough produces a dull raspy sound and too much an irritating screech or snaps the string – but just the correct degree of stress creates a beautiful tone.
Similarly, we all have to find the right amount of stress that permits us to make pleasant music in our daily lives. You can learn how to utilize and transform stress so that it will make you more productive and less self-destructive. "
You can visit the website yourself and I'll try and get some of the helpful information in here on a fairly regular basis.