The theory behind care
Yin–yang, five phases, and the functional body
A concise map of yin–yang, five-phase correspondences, functional zang, and channel vocabulary.
阴平阳秘，精神乃治。素问 · 生气通天论
Traditional relationships · 阴阳五行
Rest · inward · cooling
Activity · outward · warming
Traditional functional correspondences. This is not an anatomical map; earth’s seasonal associations vary between accounts.
Classical anchor · 素问 · 生气通天论
阴平阳秘，精神乃治。
Editorial translation
When yin is balanced and yang is securely maintained, essence and spirit are ordered.
Meaning in context. The aim is a coordinated relationship: support and containment belong with activity and warming. Nourishing yang makes sense within this relationship.
Application today. Pair activity with recovery and warmth with comfort. After a tiring day, reducing the next demand can be more appropriate than adding another stimulating practice.
Reading limit
This is a traditional account, not a claim that yin and yang can be measured as equal quantities.
Classical anchor · 素问 · 上古天真论
法于阴阳，和于术数……故能形与神俱。
Editorial translation
Take yin and yang as a guide and harmonise with methods of cultivation … so that bodily form and spirit remain together.
Meaning in context. The opening chapter places patterns of living, food, exertion, and form-and-spirit together. It supplies a whole-person framework rather than a single supplement target.
Application today. Review a demanding day as a whole: did work crowd out food, movement, rest, or supportive contact? Choose the part that is least sustainable.
Reading limit
Shushu here is not simply fortune-telling or a modern body score. The chapter’s idealised longevity account is not a guaranteed outcome.
Yin and yang are relational
Yin and yang describe paired qualities and functions: inward and outward, rest and activity, cooling and warming. The daily-care implication is a relationship to manage, not a goal to maximise yang or eliminate yin. These concepts are not interchangeable with hormones or laboratory readings.
The five phases organise correspondences
Wood–liver–spring, fire–heart–summer, earth–spleen, metal–lung–autumn, and water–kidney–winter are familiar traditional groupings. Earth is also associated with late summer or seasonal transitions in different accounts. Traditional zang are functional systems, not one-to-one maps of modern organs. These groupings explain the care narrative; they do not diagnose disease from a favourite colour or flavour.
Channels and the eight extraordinary vessels
Channel theory connects functions and pathways in traditional medicine. The eight extraordinary vessels are commonly named Du, Ren, Chong, Dai, Yin Qiao, Yang Qiao, Yin Wei, and Yang Wei. The Neijing discusses channel ideas; their later systematic presentation should not be treated as a single complete checklist quoted from one chapter. This is orientation, not a self-needling or “open all channels” method.
Use theory without confusing evidence
The model can explain why a traditional practitioner asks about several aspects of life together. It does not establish that a massage device clears a channel, that a colour treats an organ, or that every symptom has a seasonal cause. Specific treatment requires assessment and specific evidence.
Apply the idea
Which one adjustment can you sustain without adding strain?
中文要点 · Chinese summary
阴阳是相互关系，五行是传统对应体系：木肝春、火心夏、土脾、金肺秋、水肾冬；土与长夏、季节转换的联系有不同表述。藏腑功能不能等同现代解剖器官。经络和奇经八脉作简要说明，不提供自行针刺或“打通全部经络”的方法。
Follow a related idea.
Nourishing yang without forcing heat →
Dampness, digestion, and what “detox” can mean →A word unfamiliar? Read the short glossary →
素问 · 生气通天论; 素问 · 上古天真论. Chinese excerpts: Chinese Text Project. English renderings and present-day examples: our editorial work.
Other classical context in this guide: Suwen · 阴阳应象大论; 六节藏象论; Lingshu · 经脉; later systematic vessel terminology.
Additional context: Nan Jing · Eight Extraordinary Vessels, difficulties 27–29 (later systematic account).