TCM Wellness · Unit 4: The Organs · 中醫養生四

The Liver Stores Blood While You Sleep

This unit already connected blood to the heart's circulation. This lesson looks at where the body is said to keep blood in reserve.
這個單元已經把血跟心的循環連結過。這一課要看的是身體被說成把血儲備在哪裡。

Unit 87: The Liver Stores Blood While You Sleep

An earlier lesson in this unit described the heart as governing blood's circulation, moving it through the body. Chinese medicine assigns a second, complementary job to a different organ: the liver stores blood, holding a reserve supply and releasing more of it into circulation during activity, then drawing a portion back into storage during rest, most notably sleep.

這個單元稍早的一課，把心描述成主導血的循環，把血推動到全身。中醫把第二個、互補的工作，分配給另一個臟腑：肝藏血，保有一份儲備供應，活動的時候釋放更多到循環裡，休息、尤其是睡眠的時候，再把一部分收回儲存起來。

This is offered as the traditional explanation for a pattern many people notice without having a name for it: lying down and sleeping seems to visibly restore something that standing and moving around visibly drains. Under this framework, activity calls blood out of the liver's reserve to support the eyes, tendons, and muscles, all of which are traditionally linked to liver function; rest allows that blood to return to storage, which is why insufficient sleep is traditionally associated with symptoms in exactly those areas — tired eyes, stiff tendons, cramping muscles — rather than generalized fatigue alone.

這被拿來當成傳統上對一個很多人都注意到、卻沒有名字的模式的解釋：躺下來睡覺，似乎明顯地恢復了某種東西，而站著、走動明顯地耗損了它。在這個框架下，活動會把血從肝的儲備裡叫出來，去支援眼睛、筋、肌肉，這些傳統上都跟肝的功能連結在一起；休息讓這些血回到儲存裡，這也是為什麼睡眠不足，傳統上被連結到剛好就是這些部位的症狀——眼睛疲勞、筋僵硬、肌肉抽筋——而不只是一般性的疲勞。

The liver's storage job is also why this course's earlier organs unit connected mood swings and irritability to the liver specifically, alongside its now-familiar link to blood: a liver that isn't storing and releasing blood smoothly is traditionally read as an organ under strain, and blood is understood, going back to this unit's own earlier lesson on qi and blood, as one of the substances that calms rather than agitates. A liver low on its own reserve has less of that calming resource on hand to draw from.

肝的儲存工作，也是為什麼這門課稍早的臟腑單元，把情緒起伏與易怒特別連結到肝，跟它現在已經熟悉的血的連結放在一起看：一個沒有順暢地儲存與釋放血的肝，傳統上被讀成一個承受壓力的臟腑，而血，回溯到這個單元稍早關於氣血的那一課，被理解成一種讓人平靜而不是讓人躁動的物質之一。一個自己儲備偏低的肝，手邊能拿來運用的這種讓人平靜的資源也比較少。

Read aloud · 課文朗讀

Questions · 閱讀理解

According to the passage, what job does the liver perform regarding blood, and how does it differ from the heart's job?

The liver stores blood, holding a reserve and releasing it during activity while drawing it back into storage during rest; the heart, by contrast, governs blood's circulation and movement.

According to the passage, why are tired eyes, stiff tendons, and cramping muscles traditionally associated with insufficient sleep?

Because activity draws blood out of the liver's reserve to support the eyes, tendons, and muscles, and insufficient sleep prevents that blood from returning to storage, affecting exactly those areas.

According to the last paragraph, why is a liver low on blood reserve linked to mood swings and irritability?

Because blood is understood as a calming substance, and a liver low on its own reserve has less of that calming resource on hand, leaving it under strain.

Words & Phrases · 生字及片語

complementary(adj.)互補的The two roles were complementary, each covering what the other lacked.這兩個角色是互補的，各自補足對方缺少的部分。draw back(ph.)收回The tide slowly drew back from the shore.潮水慢慢地從岸邊退回去。tendon(n.)筋；肌腱She strained a tendon in her ankle during the race.她在比賽中拉傷了腳踝的肌腱。cramping(adj.)抽筋的He woke up with a cramping muscle in his leg.他醒來時腿部肌肉在抽筋。irritability(n.)易怒Lack of sleep often leads to irritability.睡眠不足常常會導致易怒。agitate(v.)使躁動；使不安Loud noises seemed to agitate the sleeping baby.大聲的噪音似乎讓睡著的嬰兒變得躁動不安。on hand(ph.)手邊可用的She kept extra supplies on hand in case of an emergency.她手邊留了額外的物資，以防緊急狀況。

Quick Check · 小測驗

1. According to the passage, what is the liver's job regarding blood, as distinct from the heart's?

2. According to the passage, why are tired eyes and stiff tendons linked to insufficient sleep?

3. According to the last paragraph, why is a low liver blood reserve linked to irritability?

This lesson explains a conceptual framework, not a diagnosis. Persistent fatigue, muscle cramping, or mood changes should be evaluated by a licensed doctor.
這是概念框架的說明，不是診斷；持續的疲勞、肌肉抽筋或情緒變化，應該由合格醫師評估。