如果你放弃锻炼，肌肉就会萎缩，脂肪会增多。同样地，如果你消耗较多的体能，你就会减掉脂肪。
If you give up exercise, your muscles shrink and fat increases. By the same token, if you expend more energy you will lose fat.
所以含脂肪更多的饮食会让每天摄入的卡路里增多。
Consequently, higher fat diets tend to result in increased caloric intake for the day.
随着年龄的增长，肌肉减少，脂肪增多，卡路里的消耗变缓。
As you get older, the amount of muscle tends to decrease and fat accounts for more of your weight, slowing down calorie burning.
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