It is better to stretch the tight muscles first.

最好先伸展一下僵硬的肌肉。

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This can lead to bodily weakness and muscle wastage.

这样可能会导致身体虚弱和肌肉萎缩。

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Massage is used to relax muscles, relieve stress and improve the circulation.

按摩可以使肌肉放松，缓解压力和促进血液循环。

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Torn muscles retract, and lose strength, structure, and tightness.

撕裂的肌肉会收缩，丧失原来的力量、结构和紧实度。

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They call rowing the perfect sport. It exercises every major muscle group.

他们称划船是最佳运动，它可以锻炼每一处主要肌肉群。

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Foods and fluids are mixed in the stomach by its muscular contractions.

通过胃部肌肉的收缩食物和流质在胃中混合。

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He was well-built, but too fleshy to be impressive.

他肌肉发达，但是太胖了，没给人留下好印象。

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The body is made up primarily of bone, muscle, and fat.

人体主要是由骨骼、肌肉和脂肪构成。

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A muscular spasm in the coronary artery can cause a heart attack.

冠状动脉的肌肉痉挛可能导致心脏病。

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There are three types of muscle in the body.

体内有3种类型的肌肉。

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The Mud Bath is particularly recommended for relieving tension and stiff muscles.

特别推荐想要放松情绪、缓解肌肉酸痛的人泡泥浆浴。

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Jane tensed her muscles to stop them from shaking.

简把肌肉绷紧，不让它们颤抖。

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My arms are tired, and my back is tense.

我的胳膊很累，背部肌肉紧绷得难受。

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Avoid muscle strain by warming up with slow jogging.

先慢跑热热身，免得拉伤肌肉。

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One group of muscles sets the next group in motion.

一组肌肉带动下一组肌肉运动。

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