Choose the best answer to fill in the blank.

            Teenagers today live in a very competitive world. It is (1) ______ important than ever to succeed at school if you hope to (2) _____ a chance in the job market afterwards. It's no wonder that many young people worry about (3) _____ their parents, their peers and themselves. To try to please everyone, they take on too (4) ______ tasks until it becomes harder and harder to balance homework assignments, parties, sports activities and friends. The result is that young people (5) ___ from stress.

            There are different ways of dealing with stress. Everyone knows that  caffeine, in the form of coffee or soft drinks, keeps you (6)_______ and alert. But caffeine is a drug (7) ______ can become addictive. In the end, like other drugs, caffeine only leads to more stress. There are better ways to deal with stress: physical exercise is a good (8) _______ for stress, (9) ______ it increases certain chemicals in the brain which calm you down. You have to get enough sleep to (10) ______ stress and to stay healthy and full of energy.

(9) ______ it increases certain chemicals in the brain which calm you down.