中級閱讀模擬測驗　第四回

Many people think that only hard workouts can keep them healthy, but this is not quite 11. In fact, a simple daily walk can bring great benefits. Walking for just thirty minutes a day helps the heart stay strong and can 12 the risk of many diseases. It also lifts our mood, because gentle movement makes the brain 13 chemicals that make us feel happy. Best of all, walking is free and 14 almost no special equipment. So next time you feel tired or stressed, put on your shoes and 15 a short walk outside.

Sleep is just as important to our health as food and exercise, yet many students often 16 it. When we sleep, our body repairs itself and the brain stores what we have learned during the day. People who do not get enough rest may feel 17 and find it hard to concentrate in class. To sleep better, experts 18 turning off phones an hour before bed, since bright screens can keep the brain awake. A quiet, dark room also helps. Building a regular sleep 19 takes time, but the reward is a sharper mind and a healthier body that can 20 the challenges of each new day.