Stress is the "wear and tear" our bodies experience as we (36) to our changing environment. As a (37) influence, stress can help us take action. As a (38) influence, it can lead to health problems such as (39) . insomma, ulcers, high blood pressure and heart disease. Our goal is not to eliminate stress but to learn how to (40) it and how to use it to help us. (41) stress may make us feel bored; on the other hand. (42) stress may make us feel tied up in knots. What we need to do is to find the optimal level of stress which will (43) but not overwhelm ns. There is no single level of stress that is optimal for all people. (44) . Moreover, our personal stress requirements and the amount which we can tolerate changes with our ages. It has been revealed that most illness is related to unrelieved stress. (45) There are many sources of stress, and there are many possibilities for its management. Here are three principles as to how to manage stress: 1. (46) 2. Recognize what you can change. 3. Reduce the intensity of your emotional reactions to stress.