Today, we are living a rapid life. We always try to get things done1. On weekdays, we are busy 2 or working. One of the 3 is that we don't have enough exercise. We all know August 8th is National Fitness Day. If we exercise for one hour a day, we will work healthily for 50 years and live a happy life forever.

    Scientists have found that people who often exercise are 4 than those who don't, whether they do it indoors or outdoors. According to a survey, students can learn better and feel less stressed when they have more 5 to play sports at school. Many young women enjoy doing yoga(瑜伽) or dancing to relax and stay 6 . In some housewives' opinion, doing housework is a good way to burn calories(卡路里). It can keep them 7 while getting their house in order. To be strong and full of 8 , some men like running, riding bicycles or playing ball games.

    You will be healthy both in the 9 and mind by doing exercise. This weekend, don't make any plans, just get up early and start 10.

—I've c a cold.

Why we some tea?

Parents often say we are young decide for ourselves.

Because of the rain, the boy was wet .

    We all need exercise. Exercise uses up food that we eat and keeps the body full energy(能量). Exercise makes your heart and muscles(肌肉) strong. Exercise makes you feel relaxed. If you exercise several times a week, you will stay happy and . There are many to exercise. You can walk, run or swim.

    However, most people cannot do this. It is too far from their homes to their offices. They have no choice to drive to work. First, these people don't have a chance to exercise because they are sitting in their cars for two to four hours each day. Second,  driving is challenging(具有挑战性的), in rush hours, and needs too much attention.  It makes a person tired out. When these people arrive home after work, they don't want to take exercise.

    Some western countries, such as the United States, have problems with . Many people don't have enough exercise. They have to work from morning till night, so they don't have time exercise.

    Today, many people in the West are fat, which causes health problems. Doctors say exercise can help people both lose and improve their health. So many people are trying to get more exercise. But it takes time to change, and when people don't see a right away, they will lose heart and stop exercising.