六级After six months, researchers found the high protein group had significantly improved their muscle function一almost twice as much as the control group.
六个月后，研究人员发现高蛋白组显著改善了肌肉功能一几乎是对照组的两倍。
2019年12月六级真题（第二套）阅读 Section B
考研Studies dating back to the 1930's indicate that laughter relaxes muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down.
可以追溯到20世纪30年代的研究表明，笑可以放松肌肉，在笑声消失后45分钟内降低肌肉张力。
2011年考研真题（英语一）完形填空 Section Ⅰ
四级When the body realizes the muscles are hurt, the response is to increase blood flow to the area and increase body heat, damaged cells are then cleaned up and the body sends cells specially designed to break down the large muscle fiber fragments.
当身体意识到肌肉受伤时，反应是增加流向该区域的血液流量，增加体温，然后清除受损细胞，身体发送专门设计的细胞，以分解大块肌肉纤维碎片。
2019年12月四级真题（第一套）听力 Section C
四级I really want to lose some of these belly fat and turn it into muscle, but I'm not sure which of the gym equipment would best help.
我真的很想减掉一些腹部脂肪并将其转化为肌肉，但我不确定哪种健身器材最有帮助。
2018年6月四级真题（第一套）听力 Section B
四级As muscle soreness develops, the body has to work to repair the muscle tears, but this doesn't happen immediately.
随着肌肉酸痛的发展，身体必须努力修复肌肉撕裂，但这不会立即发生。
2019年12月四级真题（第一套）听力 Section C
四级Its purpose is to build and maintain bone and muscle mass, both of which shrink with age.
它的目的是建立和维持骨骼和肌肉的质量，两者都随着年龄的增长而收缩。
2013年6月阅读原文
四级They were taught that the brain is like a muscle that gets stronger with use and that learning prompts the brain to grow new connections.
他们被教导，大脑就像一块肌肉，随着使用而变得更强壮，学习促使大脑建立新的联系。
2016年12月阅读原文
考研Most importantly, it constantly modifies and enhances the games you play to build on the strengths you are developing—much like an effective exercise routine requires you to increase resistance and vary your muscle use.
最重要的是，它不断地修改和增强你所玩的游戏，以建立你正在发展的力量，就像一个有效的锻炼程序要求你增加阻力和改变你的肌肉使用。
2014年考研真题（英语一）完形填空 Section Ⅰ
六级Anytime you’re repairing or building muscle.
任何时候你在修复或锻炼肌肉。
2019年12月六级真题（第二套）阅读 Section B
四级Muscle performance can also be affected by a phenomenon called "central fatigue", in which an imbalance in the body's chemical messengers prevents the central nervous system from directing muscle movements effectively.
肌肉表现也会受到一种称为“中枢疲劳”的现象的影响，在这种现象中，身体化学信使的不平衡会阻止中枢神经系统有效地引导肌肉运动。
2017年6月四级真题（第三套）阅读 Section A
四级The result of constant muscle tension and stiffness of joints, many of them are avoidable, and simple flexibility training can prevent these by making muscles stronger and keeping joints lubricated (润滑 ).
肌肉持续紧张和关节僵硬的结果，其中许多是可以避免的，简单的柔韧性训练可以通过使肌肉更强壮和保持关节润滑来防止这些(润滑 ).
2013年6月阅读原文
四级That's why there is most often a delay associated with muscle soreness.
这就是为什么最常见的延迟与肌肉酸痛有关。
2019年12月四级真题（第一套）听力 Section C
六级She's using CT scans to measure muscle size and fat, and comparing seniors on a high-protein diet with those on regular diets.
她利用CT扫描测量肌肉大小和脂肪，并将高蛋白饮食的老年人与常规饮食的老年人进行比较。
2019年12月六级真题（第二套）阅读 Section B
四级Unfortunately, there is little that can be down to relieve muscle soreness.
不幸的是，几乎没有什么可以减轻肌肉酸痛的方法。
2019年12月四级真题（第一套）听力 Section C
四级The key to fitness is exercising the major muscle groups vigorously (强有力的) enough to approximately double the heart rate and keep it doubled for 20 to 30 minutes at a time.
健身的关键是大力锻炼主要肌肉群(强有力的) 足以使心率大约加倍，并一次保持加倍20到30分钟。
1992年1月大学英语四级(CET-4)真题
四级Trying to live up to the images of “perfect” models and movie heroes has a dark side: anxiety and depression, as well as unhealthy strategies for weight loss or muscle gain.
试图不辜负“完美”模特和电影英雄的形象有着黑暗的一面：焦虑和抑郁，以及不健康的减肥或增肌策略。
2020年9月大学英语四级真题（第1套）
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