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  3. Our species evolved on the move. Recent research on the effects of exercise a

Our species evolved on the move. Recent research on the effects of exercise a

游客2025-04-28  35
问题    Our species evolved on the move. Recent research on the effects of exercise and the consequences of sedentary living has shown that physical activity is crucial to the proper processing of foods that we eat. In fact, most of the chronic and often life-threatening ailments that besiege Americans in epidemic proportions could be tempered by regular exercise. Among them are heart disease, diabetes, high blood pressure, arthritis, and osteoporosis. But let’s face it: most people are not motivated to exercise by what it may do for them 20 years down the pike. What gets people like me out moving every day is what exercise does for me right now, especially how it allows me to enjoy eating without gaining. I, along with millions of Americans, have discovered that exercise is the key to permanent and painless weight control.
   After hearing a description of my usual daily exercise schedule--a morning run or bike ride and an evening swim, sometimes with an hour of tennis in between-some people remark, "Wouldn’t it be a lot easier to eat one less bagel a day and skip all that exercise?" My answer is, "Easier, yes, but not nearly as effective nor as much fun." Here’s why exercise, not dieting, is best route to a leaner, lighter you.
   Far better for your health and, your future to lose primarily fat is in the first place. The only way to do that is through exercise, which uses body fat as its main source of energy. You may not see that initial rapid (but false) weight loss, but what you lose will be what you want to lose--fat, not muscle or water. Your loss will be permanent, too. If it’ s any consolation (安慰), studies have shown that in most cases, the faster people lose weight, the more likely they are to regain it. Slow loss, then, is the secret to lasting success.
   If you want to lose weight faster than you can with just exercise, simply combine exercise with a reduced-calorie diet. Researchers at the University of California, Davis, showed that exercise could counter the metabolism-lowering effect of a low-calorie diet in many people, it also seems to curb the adverse caloric effect of aging on body metabolism. Whereas ordinarily your metabolism would slow down as you get older (which is one reason people get fatter in middle age even though they don’t eat more), if you continue to exercise regularly, you may keep your youthful, metabolic rate by maintaining a muscular body instead of losing muscle and putting on pounds of fat. [br] The passage is mainly about ______.
选项 A、how to keep fit
B、how to lose weight
C、the benefits brought about by regular exercises
D、exercises and diet
答案 C
解析 文中叙述了regular exercises能保持健康，也能control weight，选项C概括了这两个方面，符合文意。选项A、B不全面，文章不是在论述运动和饮食的关系，选项D也不正确。
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