单选题   Exercise is good for you. But most people really know very little about how to exercise. Look at the following true-false tests. You will be surprised!
    The best way to reduce the mid-section is to do abdominal exercise.
    False. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are 'burned up'. The truth is that exercise bums fat from all over the body and not from one specific area, regardless of the type of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waistline too!
    To maintain an adequate level of physical fitness, you need to exercise only twice a week.
    False. Studies conducted by NASA, the National Aeronautics and Space Administration, show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to re-establish the good physical effects.
    To lose weight you should always 'work up a good sweat' when exercising.
    False. Sweating only lowers body temperature to prevent overheating; it does not help you reduce. You may weigh less immediate after a workout, but this is due to water loss. Once you replace the liquid, you replace the weight.
    You bum more calories jogging one mile than walking the same distance.
    False. You use the same amount of energy whether you walk or jog the mile, since in both cases you are moving the same weight the same distance. The speed doesn't matter. Of course, if you jog rather than walk for 30 minutes, you'll cover more distance, and therefore bum more calories.
    If your breathing doesn't return to normal within minutes after you finish exercising, you've exercised too much.
    True. Five minutes or so after exercising, your breathing should be normal, your heart shouldn't be pounding, and you shouldn't be exhausted. Beneficial exercise is not overly difficult, unpleasant, and refreshing.
    Walking is one of the best exercises.
    True. Walking helps circulation of blood through-out the body, and thus has a direct effect on your overall feeling.
    Vigorous stretching exercises keep muscles flexible.
    False. Stretching exercises (for example: twisting or bending at the waist, touching your toes) should be done slowly, allowing the muscles to relax and 'let go'. Vigorous stretching makes the muscles tighter.
    The minimum amount of time you should spend exercising in a day is 20 minutes.
    True. There are more than 400 muscles that attach to your skeleton. A good exercise routine should contract and stretch all these muscles, and this simply cannot be done with four or five exercises in five or ten minutes. From experience, I've found that about 20 minutes is the minimum amount of time needed for an adequate workout.

单选题     What does the author mean by saying 'You will be surprised!' (Line 2, Para.1)?

单选题     Which is not the reason why jogging one mile bum the same calories with walking the same distance?

单选题     Which of the following exercising notion is true?

单选题     Which of the following statements is Not True?

单选题     The best title of the passage may be ______.