"I know it's from sitting too long, but the job is the job — what am I supposed to do?" It is a sentence that comes up often, and behind it is usually a kind of resignation: the posture cannot change, so the aching has to be endured.

The answer first: there is a fair amount you can do, and there is a public standard to check it against. Malaysia's Department of Occupational Safety and Health (DOSH) puts it plainly in its 2024 Seating at Work guidelines: sitting for long periods can lead to discomfort and may result in long-term health problems, so it is important that employees have the opportunity to change position, stand up and move around [DOSH-SEAT].

The problem is not "sitting"; it is "for how long" and "without moving". The six things below start with why sitting still aches, then set out DOSH's standards for the screen, the elbows and the feet, how often to get up, how TCM theory sees long sitting and air-conditioning, and when to see a doctor first.

I. First: the problem is not "sitting", it is "for how long" and "without moving"

Prolonged sitting is not a diagnosis. DOSH's Seating at Work guidelines apply to all seated work, but their emphasis is on seated work with minimal movement for more than 30 minutes continuously [DOSH-SEAT]. The same department's Display Screen Equipment guidelines draw the line at using a screen for more than 1 hour continuously, or more than 4 hours cumulatively in a day without frequent breaks [DOSH-DSE].

The Display Screen Equipment guidelines give concrete examples of "static posture": keeping the head still while looking at the monitor, continuously holding a phone or tablet, and sitting without making any movements for long periods [DOSH-DSE]. The NHS neck-pain page likewise lists "bad posture — for example, when sitting at a desk for a long time" among the common causes of neck pain [NHS-NP].

So what a practitioner usually cares about is not whether your posture is textbook, but three things:

• How long one position is held unchanged — a stretch with no change of position at all is a different situation from one where you got up in between.
• How much accumulates in a day — eight hours at work, two commuting, plus the phone in the evening.
• Whether there is any movement in the opposite direction — after a day of leaning forward, is there any stretch of time that is not leaning forward?

II. Why sitting still aches: DOSH's own explanation

Both DOSH guidelines explain the mechanism, in plain words. Read this section and the numbers in sections III and IV stop being mere rules.

① Sitting is still work. The Seating at Work guidelines begin with something easy to overlook: a seated person is pulled downward by gravity all the time, and the body parts that are not resting on the chair or desk — including muscles, tendons and ligaments — exert an upward counterforce to balance it [DOSH-SEAT]. So "sitting still" is not the same as "the muscles are resting".

② The longer one posture is held, the greater the load. The guidelines define a "static and sustained posture" as the same posture or position held with minimal, restricted or no movement for a prolonged period of time [DOSH-SEAT]. The exertions sustained during prolonged sitting put an increased load or force on the muscles and tendons, which contributes to fatigue [DOSH-SEAT]. The Display Screen Equipment guidelines put it this way: the muscles hold the body in a single position for a long period, which can result in circulation problems and cause muscle tension [DOSH-DSE].

③ No movement, slower blood supply. A static working position restricts blood flow to certain parts of the body, particularly the vessels supplying the muscles; this can accelerate fatigue and make the muscles prone to injury [DOSH-SEAT]. At the same time, the sedentary nature of sitting (limited mobility) creates less demand on the circulatory system, so heart activity is lower and blood flow slows, indirectly compounding the problem [DOSH-SEAT]. The guidelines add one more sentence: being static impedes not only the blood flow that brings nutrients to the muscles, but also the transport of metabolic waste products away to be processed and eliminated [DOSH-SEAT].

④ Why the neck and shoulders. The Seating at Work risk table lists "lack of movement over a prolonged period in a sitting posture" as an item of its own, and the potential symptoms for that group include neck pain, shoulder pain, upper back pain and low back pain [DOSH-SEAT]. The Display Screen Equipment guidelines state that prolonged work with display screens has been associated with musculoskeletal conditions, especially around the neck and shoulder [DOSH-DSE]. "Associated" is the guideline's word — not "will certainly".

⑤ And the air-conditioning. DOSH counts the environment too: cold temperature leads to reduced sensory feedback and tensed-up muscle, with less dexterity and flexibility, as the body constricts blood vessels to prevent heat loss [DOSH-SEAT]. Section V sets this sentence beside TCM theory's "cold".

Joining the first four steps (the linking here is this article's own): seated muscles keep working → the longer one posture, the greater the load → stillness slows the blood supply and leaves waste uncleared → fatigue and aching. So what DOSH gives is not only the workstation standard (section III) but also "change position, stand up and move around" (section IV) [DOSH-SEAT] — both are needed.

III. DOSH's workstation standards: screen, elbows, feet

This section states the occupational-safety guideline's standards, not treatment advice. Its use is to let you check your own desk against them.

• Screen: DOSH's steps are to place the monitor directly in front of you, at arm's length (45 cm to 70 cm), with the top usable line of the monitor at a height where the neck is straight [DOSH-DSE]. Place the monitor at eye height if you wear single-prescription glasses or contacts, and below eye height if you wear bifocal, trifocal or progressive lenses [DOSH-DSE].
• Laptops: DOSH notes that a laptop's built-in screen is typically lower than eye level [DOSH-SEAT]; for prolonged use, an external keyboard, mouse and monitor should be provided [DOSH-DSE].
• Elbows and desk: a seated worker normally prefers to work with both hands at roughly elbow level or slightly lower [DOSH-SEAT]. For typing, the work surface should be about 30 to 50 mm below sitting elbow height, so the fingers type at around elbow height with the shoulders relaxed, not hunched or shrugged [DOSH-SEAT]. In DOSH's own case illustration, the improved position has the hand at a 90-degree angle and the shoulder relaxed [DOSH-SEAT].
• Feet: adjust the chair so the thighs are parallel to the ground with both feet flat on the floor [DOSH-SEAT]. A chair set too high presses on the thighs; a footrest is the last resort, for when the chair cannot be lowered [DOSH-SEAT].
• What a screen set too high or too low does: DOSH's risk table files it under "awkward posture", and the potential symptoms listed for that group include neck pain and shoulder pain [DOSH-SEAT].

IV. How often to get up: one table

DOSH's guidelines, in their case studies (call-centre and display-screen work), recommend a one-minute standing break after 30 minutes of sitting [DOSH-SEAT]. A registered practitioner at the Chinese University of Hong Kong's School of Chinese Medicine recommends changing position at least every 45 minutes [CUHK-2016]. The two numbers are close.

"Moving" here means a habit, not an exercise. DOSH calls things like answering the telephone or a discussion "productive rest", because they change the posture and rest the muscles [DOSH-DSE]; its case studies also recommend focusing the eyes on distant objects [DOSH-SEAT]. As for movements aimed at the neck or lower back, do not follow online videos on your own; the NHS shoulder-pain page says it plainly: do not make up your own strenuous exercises [NHS-SP].

V. How TCM sees it: sitting injures the flesh, looking injures the blood, and cold from the air-conditioning

TCM theory has an old line about the word "long". The Suwen chapter 宣明五气 (Xuan Ming Wu Qi) says: "The five overstrains injure thus: prolonged looking injures the blood, prolonged lying injures qi, prolonged sitting injures the flesh, prolonged standing injures the bones, prolonged walking injures the sinews — these are the injuries of the five overstrains" [BUCM-2012]. The Beijing University of Chinese Medicine article files this passage under "overuse of exertion and rest" — doing anything to excess becomes a cause of illness [BUCM-2012].

In plain terms, TCM theory holds that qi and blood are driven by the body's movement. Hold one posture too long and their circulation slows, the muscles (the "flesh") are under-nourished, and that is "prolonged sitting injures the flesh"; eyes fixed on one spot for hours is "prolonged looking injures the blood". A day at a desk does both.

What the terminology standard says. The plain-language paragraph above is a common teaching in the theory; the terminology standard puts it this way. The WHO's 2022 international standard terminologies on TCM carries the same entry, the "five exhaustions": long-time observation damages blood; long-time lying damages qi; long-time sitting damages muscles; long-time standing damages bones; long-time walking damages sinews [WHO-2022] — the standard's English renders 肉 as "muscles" [WHO-2022]. The standard also carries an entry "work-rest imbalance": a collective term for over-exertion and physical inactivity [WHO-2022]. The same chapter's "physical inactivity" entry states: physical inactivity leads to imbalances in the flow of qi and blood, weak tendons and bones, and stagnant qi of the spleen and stomach [WHO-2022]. So in the theory, "prolonged sitting injures the flesh" is not an old saying urging people to move; it is a defined entry among the causes of illness.

A registered practitioner at the Chinese University of Hong Kong's School of Chinese Medicine makes the same point from another angle: holding one posture for a long time also has an adverse effect on the joints of the cervical spine [CUHK-2016]; when the body stays still for long, the muscles and ligaments of the neck and shoulders must work harder to hold the posture, and their blood supply is also restricted by the lack of movement [CUHK-2016]. Hence the column's recommendation to change position at least every 45 minutes [CUHK-2016].

The two accounts side by side. DOSH and TCM theory start from the same observation: a body kept still for a long time. From there they part. DOSH speaks of muscles kept working, blood supply slowing, nutrients not arriving and waste not being cleared [DOSH-SEAT] — all things that can be measured. The theory speaks of "prolonged sitting injures the flesh" [BUCM-2012] and "imbalances in the flow of qi and blood" [WHO-2022] — and "qi and blood" is the theory's own category, not the blood in the vessels. The two agree on one sentence only: stillness is the problem and changing position is the answer — DOSH writes "change position, stand up and move around" [DOSH-SEAT], the CUHK column's recommendation is to change position at least every 45 minutes [CUHK-2016]. Where they differ is the language each uses for "why"; this article does not merge the two languages into one sentence.

Cold from the air-conditioning. The other line in TCM theory is external pathogens. Another registered practitioner at the same school summarises the cause of 漏肩风 (lou jian feng, a classical TCM disease name for one kind of shoulder pain) this way: wind, cold and damp enter the sinews, bones and joints directly, qi and blood are obstructed by them, the channels stop flowing freely, and pain results [CUHK-2017]; so daily life should emphasise keeping warm and keeping the shoulder out of the cold [CUHK-2017].

The terminology standard writes this line out entry by entry. "Pathogenic wind": a pathogenic factor characterised by opening the skin pores, high mobility and upward and outward movement [WHO-2022]; wind flows upward and easily affects the head, the face, the surface of the body and the yang meridians [WHO-2022]; wind is the spearhead of the exogenous pathogenic factors and liable to associate itself with cold, dampness, dryness and heat [WHO-2022] — which is why the theory so often says "wind" and "cold" in one breath. "Pathogenic cold": a pathogenic factor characterised by coldness, stagnation, congealing and contraction [WHO-2022]. "Cold congeals and stagnates": pathogenic cold causes qi and blood to stagnate, blocks the meridians, and causes pain [WHO-2022]. "Cold causes contraction": pathogenic cold constricts qi, blocks the skin pores, and causes contractions [WHO-2022].

Joining these entries (the linking here is this article's own): wind opens the pores first and cold follows; cold stops qi and blood from moving and tightens the area; when the channels do not flow freely, there is pain. That is the entry-by-entry counterpart, in the standard, of the CUHK column's sentence "qi and blood are obstructed by them, the channels stop flowing freely, and pain results" [CUHK-2017], and the theory behind its direction "keep warm and keep the shoulder out of the cold" [CUHK-2017].

DOSH also speaks of cold, in a different language: cold temperature leads to reduced sensory feedback and tensed-up muscle, with less dexterity and flexibility, as the body constricts blood vessels to prevent heat loss [DOSH-SEAT]. Both accounts use a word for "contracting" — DOSH of muscle and blood vessels, the standard of qi and pores — but they are two models, and this article does not present them as one and the same thing.

In Malaysia, the common form of "cold on the shoulder" is not winter but an office vent aimed at the neck and shoulders, or the car air-conditioning on full. The practice is simple: if your seat is under the vent, add a light jacket or redirect it.

How the two accounts would read the day. Below, both models are laid over an ordinary office day. It describes how the models read these situations, not any particular reader, and it is not a diagnosis.

• 9 a.m., laptop flat on the desk, straight to work. DOSH: a laptop's screen is typically lower than eye level [DOSH-SEAT], and a monitor too low sits under "awkward posture" in the risk table, with neck pain and shoulder pain among the potential symptoms [DOSH-SEAT]. Theory: the "long-time observation" and "long-time sitting" of the five exhaustions [WHO-2022] begin accumulating from this moment.
• 9 to 11, one email after another, head never moved. DOSH: this is exactly its example of a static posture — keeping the head still while looking at the monitor [DOSH-DSE]; muscles holding the body in a single position for a long period can result in circulation problems and tension [DOSH-DSE]. Theory: "physical inactivity" — inactivity leads to imbalances in the flow of qi and blood [WHO-2022].
• 11 a.m., the air-conditioning vent aimed at the back of the neck. DOSH: cold temperature tenses up muscle as the body constricts blood vessels to prevent heat loss [DOSH-SEAT]. Theory: wind opens the skin pores and associates itself with cold [WHO-2022]; cold causes qi and blood to stagnate and blocks the meridians [WHO-2022], and causes contractions [WHO-2022] — this is what "keep the shoulder out of the cold" [CUHK-2017] refers to.
• 2 to 6 p.m., a report to finish, not once out of the chair. DOSH: a static posture restricts blood flow to the vessels supplying the muscles and accelerates fatigue; limited mobility lowers circulatory demand and slows blood flow [DOSH-SEAT]; metabolic waste is not carried away either [DOSH-SEAT]. Theory: still "prolonged sitting injures the flesh" [WHO-2022]; what the theory counts is how long it has accumulated.
• 10 p.m., an hour on the phone on the sofa. DOSH: continuously holding a phone or tablet is a static posture [DOSH-DSE]. Theory: "long-time observation" continues after work.
• The two accounts' overall reading. DOSH reads a load that accumulates all day and a blood supply that slows again and again — so what it wrote into the guideline is "change position, stand up and move around" [DOSH-SEAT]. The theory reads two lines, "long" and "cold", stacked on the same day — so the CUHK columns' directions are to change position [CUHK-2016] and keep warm [CUHK-2017]. The two sets of advice land close together; the language of the reasons differs.

This passage describes models, not a diagnosis. The same day landing on different people can turn out completely differently; how long the ache has lasted, and whether anything in section VI applies, is what to say at the consultation.

What a TCM practitioner typically considers: acupuncture, tuina, herbal medicine, and the everyday directions above. Which of these, whether at all, and when, is the practitioner's judgement after seeing you; this article predicts no outcome. On the overall order of a pain consultation: how TCM approaches pain.

VI. See a doctor first in these situations

Posture-related aching is very common, but the following do not belong to that category:

• Persistent numbness or weakness in the arm or fingers, or a marked drop in grip strength. Get urgent help — the NHS lists "pins and needles that do not go away" and "no feeling in your arm or shoulder" among the reasons to get urgent help [NHS-SP].
• Numbness or weakness in the leg, or unsteadiness walking. Get urgent help.
• Loss of bladder or bowel control (such as difficulty peeing), or loss of feeling around the genitals or anus. Call 999 now, or go to the nearest hospital emergency department — the NHS back-pain page lists these, with back pain, among the reasons to call 999 [NHS-背痛].
• Pain after a clear injury, fall or road accident. Get urgent help [NHS-SP].
• Night pain that wakes you and keeps worsening, or unexplained weight loss. See a doctor first.
• Pain with persistent fever. Get urgent help [NHS-SP].
• Chest pain that feels tight or squeezing, or chest pain spreading to your arms, neck or jaw. Call 999 now, or go to the nearest hospital emergency department — the NHS heart-attack page lists this among the reasons to call 999 [NHS-HA]. This is an emergency, not a consultation booking.
• Slurred speech, one-sided weakness or a severe headache. Call 999 now, or go to the nearest hospital emergency department.
• Shoulder pain that has not improved after two weeks, is getting worse, or makes it very difficult to move the arm. The NHS advice is to see a doctor [NHS-SP]; neck pain or stiffness that does not go away after a few weeks, or that painkillers have not helped, is also a reason to see a doctor [NHS-NP].
• Taking medication prescribed by a doctor. Never stop a prescription on your own; discuss any change with the doctor who prescribed it.

In Malaysia, call 999 in an emergency, or go to the nearest hospital emergency department.

A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.

Fitting it into life in Malaysia

• Working from home at the dining table. Dining-table height is fixed and cannot be adjusted. DOSH's approach to a fixed-height table is a keyboard tray, or raising the chair; if your feet then leave the floor, add a footrest [DOSH-SEAT].
• Sitting under the office air-conditioning vent. The common Malaysian form of section V's "cold on the shoulder". Keep a light jacket on the chair, or redirect the vent.
• Commuting by motorbike. A long held position in traffic plus vibration is a separate load from the office chair — describe them separately.
• Standing on the LRT, laptop in the car. DOSH advises minimising laptop use on public transport and in vehicles [DOSH-DSE].
• Napping face-down on the desk at lunch. Common, and worth a mention at the consultation.
• Catching up on exercise at weekends. Nothing all week and a heavy weekend is itself information.
• Pharmacy counters (Guardian, Watsons and the like). Heat and cold packs can be bought there [NHS-NP], and the pharmacist is someone you can ask about choosing a painkiller [NHS-SP].
• Klinik Kesihatan or a government hospital. For the non-emergency situations in section VI, and for the "see a doctor to confirm" step, the nearest government clinic is the entry point; chest pain spreading to the arm, slurred speech and loss of bladder or bowel control are still 999.
• Don't follow videos for neck movements. Routines circulating online may not suit your situation. Any movement aimed at the neck or lower back should be guided by a doctor, physiotherapist or TCM practitioner who has examined you.

If you are unsure where your situation should go: when an online consultation is not the right choice. On the neck and shoulders specifically: stiff, aching neck and shoulders.

Frequently asked

How high should my pillow be? The NHS neck-pain page gives no number of centimetres, only a direction: use a low, firm pillow [NHS-NP]; when sleeping, make sure your head is the same height as the rest of your body [NHS-NP]; do not sleep on your front, and do not twist your neck in bed [NHS-NP]. So the answer to "how high" goes only as far as the guideline does: low and firm, head level with the body. If the ache is still there a few weeks after changing the pillow, bring that to the consultation.

What does air-conditioning blowing on my neck and shoulders do? TCM theory's account is in section V; the CUHK column on 漏肩风 puts it this way: wind, cold and damp obstruct qi and blood, the channels stop flowing freely, and pain results [CUHK-2017], so the direction the theory gives is to keep warm and keep the shoulder out of the cold [CUHK-2017]. That is the framework's explanation, not a diagnosis of you. In practice: a jacket, and redirect the vent; if your neck and shoulders already ache, the side the air-conditioning hits is worth mentioning at the consultation.

Is a standing desk useful? DOSH's position is not "standing beats sitting" but "change". The Seating at Work guidelines: sitting for long periods can lead to discomfort, so employees need the opportunity to change position, stand up and move around [DOSH-SEAT]; the short breaks it describes include switching from seated work to standing work [DOSH-SEAT]. The Standing at Work guidelines say: standing is a natural human posture and by itself poses no particular health hazard, but prolonged standing at work can lead to ergonomic risk factors that affect health [DOSH-STAND]. Where a standing desk fits is a matter of those two sentences.

Can I use heat? The NHS neck-pain page lists heat or cold packs among the things you can do yourself: a hot water bottle wrapped in a tea towel on the neck for 20 minutes, 2 to 3 times a day [NHS-NP]; the shoulder-pain page says either heat or cold can be tried, for up to 20 minutes at a time [NHS-SP]. Two conditions: pain with fever belongs to section VI — get urgent help, and a shoulder that is badly swollen or hot to touch is on the NHS urgent list too [NHS-SP] — do not apply heat first in any of these; and if your doctor or practitioner has given a different instruction, follow theirs.

What is the difference between a massage parlour and seeing a TCM practitioner? It is not a question of which is better, but of which one you need right now. A massage parlour offers relaxation; TCM tuina is manual therapy after a practitioner's assessment — there is a consultation before it, a judgement, and situations where it is not done. The detail is in "Tui Na or Massage?" (/tuina-vs-massage/). For the situations listed in section VI, neither is the first step — see a doctor.

How long is too long before seeing a doctor? The NHS standard: if shoulder pain has not started to ease within two weeks, is getting worse, or makes it very difficult to move the arm, see a doctor [NHS-SP]; neck pain or stiffness that does not go away after a few weeks, or that painkillers have not helped, is also a reason to see a doctor [NHS-NP]. Sudden or very bad pain, being unable to move the arm, pins and needles that do not go away, pain that started after an injury, or feeling feverish are reasons to get urgent help [NHS-SP]. Section VI follows the same logic.

In closing

✅ Worth remembering:

1. The problem is not "sitting" but "for how long" and "without moving": DOSH's emphasis is on seated work with minimal movement for more than 30 minutes continuously [DOSH-SEAT].
2. Why sitting still aches: DOSH's explanation is that a static posture restricts blood flow to the vessels supplying the muscles and accelerates fatigue [DOSH-SEAT]; muscles holding the body in one position for a long period can result in circulation problems and tension [DOSH-DSE].
3. DOSH's standards: screen directly in front, an arm's length away, top line at a height where the neck is straight [DOSH-DSE]; typing surface a little below the elbows, shoulders relaxed [DOSH-SEAT]; feet flat [DOSH-SEAT].
4. How often to get up: DOSH's case studies recommend a one-minute standing break every 30 minutes [DOSH-SEAT]; CUHK's School of Chinese Medicine recommends changing position at least every 45 minutes [CUHK-2016] — standing to take a call or walking to the pantry counts.
5. TCM theory: prolonged sitting injures the flesh, prolonged looking injures the blood [BUCM-2012]; the terminology standard's "physical inactivity": inactivity leads to imbalances in the flow of qi and blood [WHO-2022]; on 漏肩风, the CUHK column's direction is to keep warm and keep the shoulder out of the cold [CUHK-2017]; the standard's "cold causes contraction": pathogenic cold causes contractions [WHO-2022] — in Malaysia, that is a jacket and a redirected vent when the air-conditioning blows on you.
6. Persistent numbness, injury, fever — get urgent help [NHS-SP]. Chest pain spreading to the arm — call 999 now [NHS-HA]. Not improving after two weeks — see a doctor [NHS-SP].

❌ Better not to:

1. Absorb new numbness or weakness into "the job is just like this".
2. Follow online videos for neck or lower-back movements on your own.
3. Stop prescribed medication on your own because you have started TCM care; discuss any change with the doctor who prescribed it.

👉 If you are not sure "where this desk-work neck and shoulder ache should go next", you are welcome to bring it to an online consultation with HansMed, where a practitioner registered under the T&CM Act 2016 can assess it; if any of section VI applies, see a doctor first. In-person consultations are coming soon.

Reviewed by Ms. Heather Wong, a TCM practitioner registered with Malaysia's Traditional and Complementary Medicine Council under the T&CM Act 2016, practising in pain management, internal medicine, acupuncture and women's health.

Sit with a licensed TCM practitioner from wherever you are.

HansMed Modern TCM

「医师，我知道是坐太久，但工作就是这样，能怎么办？」这是不少读者常说的一句话，背后通常是一种放弃——姿势不能改，所以酸痛只能忍。

先给答案：能做的不少，而且有公开标准可查。 马来西亚职业安全与卫生局（DOSH）2024 年的《坐姿工作指引》写得直接：长时间坐着可能造成不适，甚至长期健康问题，所以让员工有机会换姿势、站起来、走动，是重要的 [DOSH-SEAT]。

问题不在「坐」，在「久」和「不动」。下面 6 个重点，先说久坐为什么会酸，再把 DOSH 对屏幕、手肘、脚的标准，多久该起身，中医理论怎么看久坐与冷气，以及什么时候先看医生，一次说清楚。

一、先分清楚：问题不在「坐」，在「久」和「不动」

久坐本身不是一个诊断。DOSH 的《坐姿工作指引》适用于所有坐着的工作，但特别强调的是连续超过 30 分钟、几乎不动的坐姿工作 [DOSH-SEAT]。同一个部门的《显示屏设备工作指引》划的线是：连续使用屏幕超过 1 小时，或一天累积超过 4 小时而没有经常休息 [DOSH-DSE]。

《显示屏设备工作指引》把「静态姿势」的例子列得很具体：看着屏幕时头部维持不动、长时间握着手机或平板、长时间坐着完全不动 [DOSH-DSE]。英国 NHS 的颈痛页面也把「坐在桌前太久的不良姿势」列为颈痛的常见原因之一 [NHS-NP]。

所以医师在意的通常不是姿势标不标准，而是三件事：

• 维持同一个姿势多久没变：整段时间完全没换过姿势，和中间有起身活动过，是不同的情况。
• 一天累积多少：上班八小时，加上通勤两小时，再加上晚上滑手机。
• 有没有相反方向的活动：一整天前倾之后，有没有任何时段是不前倾的。

二、久坐为什么会酸：DOSH 自己的解释

DOSH 的两份指引都解释了机制，用的是平常的话。读懂这一节，第三、四节的数字就不只是规定。

① 坐着也是在用力。 《坐姿工作指引》先说明一件常被忽略的事：坐着的人受地心引力持续向下拉，没有靠在椅子或桌子上的那些部位——包括肌肉、肌腱和韧带——要持续向上出力来平衡它 [DOSH-SEAT]。所以「坐着不动」不等于「肌肉在休息」。

② 同一个姿势维持越久，负荷越大。 指引把「静态与持续姿势」定义为：同一个姿势或位置在很长一段时间里几乎不动、受限或完全不动 [DOSH-SEAT]。长时间坐姿下持续的出力，会增加肌肉与肌腱的负荷或受力，造成疲劳 [DOSH-SEAT]。《显示屏设备工作指引》的说法是：肌肉长时间把身体固定在同一个位置，可能造成血液循环的问题，并引起肌肉紧绷 [DOSH-DSE]。

③ 不动，供血就慢。 静态的工作姿势会限制身体某些部位的血流，尤其是供应肌肉的血管；这会加快疲劳，让肌肉更容易受伤 [DOSH-SEAT]。同时，久坐（活动受限）对循环系统的需求变少，心脏活动降低，血流因此变慢，间接让问题更严重 [DOSH-SEAT]。指引还补了一句：静止不动不只阻碍把养分送到肌肉的血流，也阻碍把代谢废物运走处理 [DOSH-SEAT]。

④ 为什么是颈肩。 《坐姿工作指引》的风险表把「坐姿中长时间缺乏活动」单独列为一项，这一栏对应的可能症状包括颈痛、肩痛、上背痛、下背痛 [DOSH-SEAT]。《显示屏设备工作指引》则写明：长时间使用显示屏与肌肉骨骼问题有关联，尤其是颈部与肩部一带 [DOSH-DSE]。「有关联」是指引的用词，不是「一定会」。

⑤ 冷气呢。 DOSH 把环境也算进去：低温会令感觉反馈变差、肌肉绷紧、灵活度下降，身体为了保温而收缩血管 [DOSH-SEAT]。第五节会把这句和中医理论的「寒」并排来看。

把前四步连起来（这一段的连结是本文的整理）：坐着的肌肉在持续出力 → 同一姿势越久负荷越大 → 不动令供血变慢、废物运不走 → 疲劳与酸。所以 DOSH 给的不只是工作站标准（第三节），还有「换姿势、站起来、走动」（第四节）[DOSH-SEAT]——两样都要。

三、DOSH 的工作站标准：屏幕、手肘、脚

这一节写的是职业安全指引的标准，不是治疗建议。它的用处是让您对照自己的桌子。

• 屏幕：DOSH 的做法是把屏幕放在正前方，距离一个手臂长（45 到 70 厘米），屏幕最上面可用的一行放在颈部能保持挺直的高度 [DOSH-DSE]。戴单焦距眼镜或隐形眼镜的人，屏幕放在视线高度；戴双焦、三焦或渐进镜片的人，放在视线以下 [DOSH-DSE]。
• 手提电脑：DOSH 指出手提电脑的屏幕通常低于视线 [DOSH-SEAT]；长时间使用时，应配外接键盘、鼠标和屏幕 [DOSH-DSE]。
• 手肘与桌面：坐着工作时，一般偏好的是双手大约在手肘高度或略低 [DOSH-SEAT]。打字时，桌面应比坐姿手肘高度低约 30 到 50 毫米，让手指在手肘高度打字、肩膀放松而不是耸起 [DOSH-SEAT]。DOSH 的案例说明里，改善后的姿势是手部呈 90 度角、肩膀放松 [DOSH-SEAT]。
• 脚：椅子高度调到大腿与地面平行、双脚平放地上 [DOSH-SEAT]。椅子太高会压到大腿；椅子降不下来时，才用脚踏 [DOSH-SEAT]。
• 屏幕太高或太低会怎样：DOSH 的风险表把它列在「不良姿势」一栏，这一栏对应的可能症状包括颈痛、肩痛 [DOSH-SEAT]。

四、多久起身一次：一张表看懂

DOSH 的指引在案例部分（客服中心、显示屏工作）建议每坐 30 分钟站起来一分钟 [DOSH-SEAT]。香港中文大学中医学院的注册中医师建议至少每 45 分钟换一次姿势 [CUHK-2016]。两个数字相差不远。

这里说的「动」是习惯，不是运动。DOSH 把接电话、和同事讨论这类事叫做「有产出的休息」，因为它让姿势换了、肌肉歇了 [DOSH-DSE]；案例部分也建议把视线放到远处的东西上 [DOSH-SEAT]。至于针对颈椎或腰椎的动作，请不要照着网络影片自行做；NHS 的肩痛页面也写得直接：不要自创吃力的运动 [NHS-SP]。

五、中医怎么看：久坐伤肉、久视伤血，以及冷气里的风寒

中医理论对「久」这个字有一段很老的说法。《素问·宣明五气篇》：「五劳所伤：久视伤血，久卧伤气，久坐伤肉，久立伤骨，久行伤筋，是谓五劳所伤」[BUCM-2012]。北京中医药大学的文章把这一段归在「劳逸过用」之下——做得太过，就成了病因 [BUCM-2012]。

用平常的话说，中医理论认为气血要靠身体的活动来推动。同一个姿势维持过久，气血运行减慢，肌肉（「肉」）得不到足够濡养，是「久坐伤肉」；眼睛长时间盯着一处，是「久视伤血」。办公桌前的一天，两样都占了。

术语标准怎么写。 上面那段白话是通说；术语标准的写法是这样的。世界卫生组织 2022 年的中医术语国际标准收了同一条「五劳」：久视伤血，久卧伤气，久坐伤肉，久立伤骨，久行伤筋 [WHO-2022]——标准的英文把「肉」写作 muscles（肌肉）[WHO-2022]。标准另有「劳逸失度」一条：过劳与过逸的合称 [WHO-2022]。同一章的「过逸」条目写明：缺乏活动会导致气血运行失调、筋骨软弱、脾胃之气停滞 [WHO-2022]。所以在理论里，「久坐伤肉」不是一句劝人多动的老话，而是有定义的病因条目。

香港中文大学中医学院的注册中医师从另一个角度说同一件事：长时间保持同一姿势，对颈椎关节也会造成不良影响 [CUHK-2016]；长时间不动，颈肩部的肌肉与韧带需要加大工作量来维持姿势，血液供养也因缺乏运动而受限 [CUHK-2016]。所以专栏建议至少每 45 分钟换一次姿势 [CUHK-2016]。

两套说法放在一起。 DOSH 与中医理论从同一个观察出发：身体长时间不动。往下就分开了。DOSH 说的是肌肉持续出力、供血变慢、养分进不来、废物运不走 [DOSH-SEAT]——都是可以量的东西。理论说的是「久坐伤肉」[BUCM-2012] 与「气血运行失调」[WHO-2022]——「气血」是理论自己的范畴，不等于血管里的血。两边相同的只有一句：不动是问题，换姿势是答案——DOSH 写的是「换姿势、站起来、走动」[DOSH-SEAT]，中大专栏写的是至少每 45 分钟换一次姿势 [CUHK-2016]。不同的是各自解释「为什么」的语言；本文不把两套语言合并成一句。

冷气里的风寒。 中医理论的另一条线是外邪。同一所学院的另一位注册中医师，就「漏肩风」（中医的一个肩痛病名）这样概括病因：风、寒、湿之邪直入筋骨关节，令气血受邪所滞阻，经络不通而引起疼痛 [CUHK-2017]；所以日常应着重保暖，避免肩部受寒 [CUHK-2017]。

术语标准把这条线拆开来写。「风邪」：以开泄毛孔、善动、向上向外为特征的病因 [WHO-2022]；风向上走，容易影响头、面、体表与阳经 [WHO-2022]；风是外邪的先导，容易与寒、湿、燥、热相合 [WHO-2022]——这是理论里「风」和「寒」常常连着说的原因。「寒邪」：以寒冷、停滞、凝结、收缩为特征的病因 [WHO-2022]。「寒性凝滞」：寒邪使气血凝滞、阻塞经络，引起疼痛 [WHO-2022]。「寒性收引」：寒邪使气收敛、闭塞毛孔，并引起收缩 [WHO-2022]。

把这几条连起来（这一段的连结是本文的整理）：风先把毛孔打开，寒跟着进来；寒让气血走不动，也让局部收紧；经络不通，就痛。这就是中大专栏那句「令气血受邪所滞阻，经络不通而引起疼痛」[CUHK-2017] 在标准里的逐条对应，也是「保暖、避免肩部受寒」[CUHK-2017] 这个方向背后的理论。

DOSH 那一边也谈到冷，用的是另一套语言：低温令感觉反馈变差、肌肉绷紧、灵活度下降，身体为保温而收缩血管 [DOSH-SEAT]。两套说法都用到「收」这个字——DOSH 说的是肌肉与血管，标准说的是气与毛孔——但它们是两个模型，本文不把它们说成同一件事。

放到大马，「受寒」常见的形态不是冬天，而是办公室出风口正对着肩颈、车里冷气开到最大。做法很朴素：座位在出风口下方，加一件薄外套，或把出风口调开。

两套说法会这样读这一天。 以下把两套模型套在一个普通的办公日上。说的是模型怎么读这些情境，不是在说任何一位读者，也不是诊断。

• 早上九点，手提电脑直接放桌上开工。 DOSH：手提电脑的屏幕通常低于视线 [DOSH-SEAT]，屏幕太低属风险表的「不良姿势」，对应颈痛、肩痛 [DOSH-SEAT]。理论：五劳里的「久视」与「久坐」[WHO-2022]，从这一刻开始累积。
• 九点到十一点，一封邮件接一封，头没动过。 DOSH：这正是它举的静态姿势例子——看屏幕时头部维持不动 [DOSH-DSE]；肌肉长时间把身体固定在同一位置，可能造成循环问题与紧绷 [DOSH-DSE]。理论：「过逸」——缺乏活动导致气血运行失调 [WHO-2022]。
• 十一点，冷气出风口正对着后颈。 DOSH：低温令肌肉绷紧，身体收缩血管以保温 [DOSH-SEAT]。理论：风开泄毛孔、与寒相合 [WHO-2022]；寒使气血凝滞、阻塞经络 [WHO-2022]，并引起收缩 [WHO-2022]——「避免肩部受寒」[CUHK-2017] 说的就是这个。
• 下午两点到六点，赶报告，一次都没起身。 DOSH：静态姿势限制供应肌肉的血流、加快疲劳；活动受限令循环需求下降、血流变慢 [DOSH-SEAT]；代谢废物也运不走 [DOSH-SEAT]。理论：还是「久坐伤肉」[WHO-2022]，理论数的是累积了多久。
• 晚上十点，沙发上滑手机一小时。 DOSH：长时间握着手机、平板是静态姿势 [DOSH-DSE]。理论：「久视」在下班后继续。
• 两套说法的总读法。 DOSH 读到的是负荷一整天累积、供血一再变慢——所以它写进指引的是「换姿势、站起来、走动」[DOSH-SEAT]。理论读到的是「久」与「寒」两条线叠在同一天——所以中大专栏给的方向是换姿势 [CUHK-2016] 与保暖 [CUHK-2017]。两边的建议落点相近，理由的语言不同。

这一段说的是模型，不是诊断。同样的一天落在不同的人身上，结果可以完全不同；酸了多久、有没有第六节列的情况，才是看诊时要说的。

中医师一般会考虑的方向：针灸、推拿、中药，以及上面这些生活方向。用哪一种、要不要用、什么时候用，是医师看过您之后的判断，本文不预测结果。整体的问诊顺序可参考：中医怎么看疼痛。

六、这些情况请先就医

姿势相关的酸痛很常见，但以下情况不属于这一类：

• 手臂或手指持续麻木、无力，或握力明显下降：请马上求医——NHS 把「持续的麻或刺痛」「手臂或肩膀失去感觉」列为要马上求医的情况 [NHS-SP]。
• 腿部麻木、无力，或走路不稳：请马上求医。
• 大小便失禁或失控（例如排尿困难），或生殖器、肛门周围失去感觉：请立刻拨打 999，或前往最近的医院急诊部——NHS 的背痛页面把背痛伴随这些情况列为要立刻拨打 999 的情况 [NHS-背痛]。
• 明显外伤、跌倒或车祸之后的疼痛：请马上求医 [NHS-SP]。
• 夜间痛醒且持续加重，或伴随不明原因的体重下降：请先就医。
• 疼痛伴随持续发烧：请马上求医 [NHS-SP]。
• 胸口发紧或疼痛，或胸痛蔓延到手臂、颈部或下巴：请立刻拨打 999，或前往最近的医院急诊部——NHS 的心脏病发作页面把这列为要立刻拨打 999 的情况 [NHS-HA]。这是急症，不要先安排问诊。
• 说话不清、单侧无力或剧烈头痛：请立刻拨打 999，或前往最近的医院急诊部。
• 肩痛超过两周没有好转、越来越痛，或很难动手臂：NHS 的建议是看医生 [NHS-SP]；颈痛或僵硬几周不退、止痛药没效，也是看医生 [NHS-NP]。
• 正在服用医生开的药：切勿自行停药，任何调整请先与开药的医生商量。

在马来西亚，紧急状况可拨打 999，或前往最近的医院急诊部。

小提醒：本段仅为一般知识说明。相关情况请以西医的诊断与治疗为主，并在需要时及时就医。

大马生活里怎么安排

• WFH 用餐桌当办公桌：餐桌高度固定、不能调。DOSH 对固定高度桌子的做法是：加装键盘托盘，或把椅子调高；椅子调高后脚不着地，就配脚踏 [DOSH-SEAT]。
• 办公室冷气直吹：第五节说的「肩部受寒」在大马常见的形态。薄外套放在座位上，或把出风口调开。
• 骑摩托通勤：塞车时长时间维持同一姿势加上震动，和坐办公室是两段不同的负担，请分开说。
• 搭 LRT 站着、在车上用手提电脑：DOSH 建议尽量不在公共交通与车上使用手提电脑 [DOSH-DSE]。
• 午休趴在桌上睡：很常见，也很值得在问诊时提一句。
• 周末补运动：平日完全不动、周末突然大量运动，这个落差本身就是资讯。
• 药剂行（Guardian、Watsons）：热敷包与冷敷包可以在那里买到 [NHS-NP]；止痛药怎么选，柜台的药剂师是可以问的人 [NHS-SP]。
• Klinik Kesihatan 或政府医院：第六节里不属于急症的情况，以及「先看医生确认」这一步，最近的政府诊所就是入口；胸痛蔓延到手臂、说话不清、大小便失控那几项仍是 999。
• 别照着影片做颈椎动作：网络上流传的动作不一定适合您的情况。任何针对颈椎或腰椎的动作，请由检查过您的医生、物理治疗师或中医师指导后再做。

不确定自己的情况该往哪里去，可参考：哪些情况不适合线上问诊。关于肩颈的问诊内容，可参考：肩颈僵硬酸痛。

常见问题

枕头要多高？ NHS 的颈痛页面没有给厘米数，给的是方向：用低而扎实的枕头 [NHS-NP]；睡觉时头部与身体其余部分同高 [NHS-NP]；不要趴着睡，不要在床上扭着颈部 [NHS-NP]。所以「多高」的答案，本文只写到指引写明的两点：低而扎实、头与身体同高。枕头换了几周酸痛还在，把这件事带到问诊。

冷气直吹肩颈会怎样？ 中医理论的说法在第五节，中大中医学院的专栏就「漏肩风」写的是：风寒湿之邪令气血滞阻、经络不通而痛 [CUHK-2017]，所以理论给的方向是保暖、避免肩部受寒 [CUHK-2017]。这是理论框架的解释，不是对您的诊断。实际做法：外套、调风向；若肩颈本来就酸，冷气直吹的那一侧值得在问诊时说明。

站立办公桌有用吗？ DOSH 的立场不是「站比坐好」，而是「换」。《坐姿工作指引》：长时间坐着可能造成不适，所以员工要有机会换姿势、站起来、走动 [DOSH-SEAT]；它说的短暂休息，也包括从坐着工作换成站着工作 [DOSH-SEAT]。《站姿工作指引》则说：站是自然的姿势，本身没有特别的健康危害，但长时间站着工作会带来影响健康的人体工学风险 [DOSH-STAND]。站立桌落在哪一边，看的就是这两句。

热敷可以吗？ NHS 的颈痛页面把热敷或冷敷列在「可以自己做」的事里：热水袋用毛巾包着敷颈部 20 分钟，一天 2 到 3 次 [NHS-NP]；肩痛页面的写法是热敷或冷敷都可以试，一次最多 20 分钟 [NHS-SP]。两个前提：疼痛伴随发烧属于第六节要马上求医的情况，肩部严重肿胀或摸起来发热也在 NHS 要马上求医的清单上 [NHS-SP]，这些都不要先热敷；医生或医师给了不同指示，以他们的为准。

去按摩店和看中医的分别？ 两者不是「谁比较好」的问题，而是您现在需要的是哪一种。按摩店提供的是放松；中医推拿是医师评估之后的手法治疗，前面有问诊、有判断、也有不适合做的情况。差别的细节在〈推拿和按摩有什么不同〉（/tuina-vs-massage/）。第六节列出的情况，两者都不是第一步——先看医生。

酸痛多久没好要看医生？ NHS 的标准：肩痛两周内没有开始好转、越来越痛，或很难动手臂，就看医生 [NHS-SP]；颈痛或僵硬几周不退、止痛药没效，也看医生 [NHS-NP]。突然剧痛、动不了、持续的麻、外伤之后、发烧，则是要马上求医的情况 [NHS-SP]。第六节列的是同一套逻辑。

结语

✅ 记住这几点：

1. 问题不在「坐」，在「久」和「不动」：DOSH 特别关注连续超过 30 分钟、几乎不动的坐姿 [DOSH-SEAT]。
2. 久坐为什么会酸：DOSH 的解释是静态姿势限制供应肌肉的血流、加快疲劳 [DOSH-SEAT]；肌肉长时间固定身体，可能造成循环问题与紧绷 [DOSH-DSE]。
3. DOSH 的标准：屏幕正前方、一臂之遥、顶行在颈部挺直的高度 [DOSH-DSE]；打字桌面略低于手肘、肩膀放松 [DOSH-SEAT]；双脚平放 [DOSH-SEAT]。
4. 多久起身：DOSH 案例建议每坐 30 分钟站一分钟 [DOSH-SEAT]，中大中医学院建议至少每 45 分钟换姿势 [CUHK-2016]——站着接电话、走去 pantry 就算。
5. 中医理论：久坐伤肉、久视伤血 [BUCM-2012]；术语标准的「过逸」：缺乏活动导致气血运行失调 [WHO-2022]；就「漏肩风」，中大专栏给的方向是保暖、避免肩部受寒 [CUHK-2017]；标准的「寒性收引」：寒邪引起收缩 [WHO-2022]——在大马，那就是冷气直吹时的外套、调风向。
6. 持续手麻、外伤后、发烧——马上求医 [NHS-SP]。胸痛蔓延到手臂——请立刻拨打 999 [NHS-HA]。两周没好转——看医生 [NHS-SP]。

❌ 不要这样做：

1. 不要因为「工作就是这样」而把新出现的麻或无力也一起忍下去。
2. 不要照着网络影片自行做针对颈椎或腰椎的动作。
3. 不要因为开始中医调理就自行停掉医生开的药——切勿自行停药，任何调整请先与开药的医生商量。

👉 如果您不确定「我这种坐出来的肩颈酸痛，下一步该往哪里走」，欢迎透过汉方中医的线上问诊，由依 2016 年 T&CM 法令注册的医师为您评估；若有第六节列出的情况，请先就医。线下亲诊服务即将推出。

本文由 黄如愿 医师 撰稿审阅。黄如愿 医师依 2016 年 T&CM 法令于马来西亚传统与辅助医药理事会注册执业，专长为疼痛管理、内科、针灸与妇科。

无论身在何处，与持证中医师对坐。

汉方现代中医