Arousal level is an important topic in motivation theory. It was the question that when the performance level is best. When the arousal level is high or low the performance level will suffer. There is an example of an examination. Suppose there is your exam, if your arousal level is low then it will create boredom and apathy or reduced the behavior efficiency. When the arousal level become increased the anxiety and stress will occur that also decreased the efficiency of behavior. Both the level will decrease the efficiency of behavior. The optimal level will be the exact level where the performance level will not affect.
