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Physical Fitness Physical fitness is todays hot topic. And wherever you turn, you hear something new. But is it all true? No pains, no gains. Many people tend to overdo their exercise programs looking for quick results. Doing so, however, may result in your injury or sore muscles. Your best bet is to start any exercise program slowly and gradually increase the workout. This gives people a good beginning without the pain or injury. You can get fit in 10 minutes a week. This and similar claims are common, but untrue. There are no shortcuts to getting fit. Becoming fit takes work and the general rule is 20 minutes of aerobic activity three times a week. Consistency is the key. If you stop working out, your muscles will turn to fat. If you decrease your activity and continue to eat the same or more, you may gain back the fat that you worked so hard to lose. Its not, however, because your muscles turned to fat. Muscles may atrophy , but they wont turn to fat. Muscle is muscle and fat is fat. A.fat. C.muscles. 正确答案:B Paragraph 3 suggests people that B.they not do exercise to avoid injury. D.ignore the injury and sore muscle and persevere in doing the exercise. 解析:问题问的是：第三段建议人们如何运动?推理判断题。第三段提到运动最好是开始慢些，渐渐增加运动量。 | 
