怎么让自己很快背英语四级（08四六级如何变得strong）

A world-champion body builder has no more muscles than does a 90 pound weakling. So what makes him so strong？ What other qualities does he need？

一个健美运动员的世界冠军，全身的肌肉并不比一个90磅（约82斤）的弱鸡多。那是什么使得他如此强壮呢？

Muscles are made of thousands of stringy fibers—a number that is fixed during childhood—which contract when doing work. Strength does not depend on the number of fibers but on the function of their thickness and how many of them contract simultaneously.

肌肉，由成千上万的纤维构成，这些纤维在运动时会收缩，其数量在儿童时期是固定的。

力量，不是由纤维的数量决定的，而是由纤维的厚度以及做运动时有多少纤维能够同时收缩。

Exercise actually damages the muscles. During the recovery stage, the muscle fibers increase in size. Exercise also trains more muscle fibers to work at one time. If a muscle is weak or untrained, for example, only about 10 percent of its fibers will contract, whereas up to 90 percent of the fibers in a weight lifter's bulky biceps will contract.

锻炼实际上会损害肌肉。在恢复阶段，肌肉纤维的大小会增加。锻炼还可以训练更多的肌肉纤维一起起作用。如果肌肉无力或未受过训练，则肌肉中只有10％的纤维会收缩，举重运动员笨重的二头肌中多达90％的纤维会一起收缩。

Aside from strength, two other ingredients go into making an athlete: fitness and endurance. Fitness is related to the condition of the heart. During exercises, there is an increase in the amount of blood returning to the heart from the muscles. A typical volume for a runner at rest is about 5 quarts a minutes, compared with 30 quarts during a vigorous trial. This greater volume means more work for the heart—a muscular balloon that expands and contracts to take in blood and squeeze it out. Like any other muscle, the heart enlarges and gets stronger with routine exercise.

除了力量之外，训练一个运动员还需要考虑其他两个因素：健身和耐力。

健身与心脏状况有关。在锻炼过程中，从肌肉回流到心脏的血液量增加。跑步者在休息时的典型体积为每分钟5夸脱，剧烈运动时达到30夸脱。更大的体积意味着心脏更多的工作量——膨胀和收缩的肌肉气球会吸收血液并将其挤出，像任何其他肌肉一样，心脏通过规律锻炼来变得更强。

Endurance, or the length of time muscles can work, depends in part on how much fuel—in this case sugar—the muscles can store. A muscle that is continually exercised until it is exhausted of sugar tends to store more when it refuels at the next meal. And more sugar can translate into greater endurance the next time the muscle is put to the test.

耐力，或肌肉可以工作的时间长度，部分取决于肌肉可以存储多少燃料（在这种情况下为糖分，肌肉可以储存糖分的多少）。持续锻炼直到糖耗尽的肌肉在下一餐加油时往往会储存更多的糖，下次进行肌肉测试时，更多的糖可以转化为更大的耐力。

#英语四六级必过#总结，增肌也好，强身也好，规律锻炼都是必要的，既使得你的心肌更强壮，又让你更能散发荷尔蒙的迷人魅力。