完形填空。

　　Doctors and other scientists study the human mind and now they have proved that stress can have an influence on the health of your body．

　　Stress is 　　1　　 whenever there is a problem or change in your life．Of course, everybody has stress more or less and nobody’s life is 　　2　　．In fact, stress is necessary．Without 　　3　　, we would never learn anything or grow or change．We would 　　4　　 be bored to death．But too much stress can 　　5　　 you．

　　Today you have different kinds of stress．Problems like endless homework or troubles with your family are the kinds of things you can’t fight against 　　6　　 run away from．

　　　　7　　 can you do about stress? First, you can try to find ways to change things so you aren’t under so much stress．You can 　　8　　a plan to finish homework, go to a doctor or try to work things out with your family or friends．But sometimes you can’t 　　9　　 a stressful situation．Sometimes you don’t even want to．

　　The link between your body and brain 　　10　　 in two ways．Your body can help your mind deal with stress．If you are 　　11　　 stress, you need to take especially good care of your body．It’s important to get enough sleep and have nutritious meals．Another thing that you can do is daily 　　12　　．Anyone with a continuing physical problem should check with a doctor before starting any exercise programs．