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  3. People need to be active to be healthy. Our modern lifestyle and all the conveniences we’ve become used to have made us keep a l

People need to be active to be healthy. Our modern lifestyle and all the conveniences we’ve become used to have made us keep a l

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问题     People need to be active to be healthy. Our modern lifestyle and all the conveniences we’ve become used to have made us keep a long time sitting, such as sitting around in front of the TV or the computer, riding in the car for even a short trip to the store and using elevators instead of stairs. That’s dangerous for our health. Physical inactivity is as dangerous to our health as smoking!
    Add up your activities during the day in periods of at least 10 minutes each. Start slowly . . . and build up. If you’re already doing some light activities move up to more moderate ones. A little is good, hut more is better if you want to achieve health benefits.
    Scientists say accumulate 60 minutes of physical activity every day to stay healthy or improve your health. Time needed depends on effort — as you progress to moderate activities, you can cut down to thirty minutes, four days a week.
    Physical activity doesn’t have to be very hard to improve your health. This goal can be reached by building physical activities into your daily routine. Just add up in periods of at least ten minutes each throughout the day. After three months of regular physical activity, you will notice a difference — people often say getting started is the hardest part.  
You can improve your health______.
选项 A、relaxing and keeping cool
B、spending longer hours in activities
C、eating less and less during short periods of time
D、integrating physical activity into your timetable
答案D
解析 第四段。改善健康不必要进行很剧烈的运动。它是长期的，有计划的。应把锻炼记入时间表中，过一段时间后检查其效果。选项D是正确的。
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