Feishu

What is BL13 (Feishu), and why does the tradition put it at the top of the back?

BL13, called Feishu in Chinese, sits on the inner branch of the Bladder channel as it runs down either side of the spine. Its name translates roughly as "Lung transport point" — fei meaning lung, shu meaning a place where influence is conveyed inward. It is the third point in a vertical ladder of so-called back-shu points, each traditionally paired with one internal organ, and it is the one assigned to the lungs.

In classical Chinese medicine the back-shu points are described as the places where the qi of each organ "surfaces" on the back, so that pressing there is understood as speaking directly to that organ. BL13 is therefore the point most often reached for in traditional practice when the presenting picture is cough, wheeze, tightness across the upper chest, breathlessness, or a chest cold that will not clear. It also carries a secondary traditional role in defending against wind and cold — old texts advise keeping the upper back covered in cold weather precisely because this region is thought to be where external chill enters.

Anatomically the point lies over the upper thoracic paraspinal muscles, close to the medial border of the shoulder blade, above the deep bulk of the rhomboids and trapezius. This is a region that becomes genuinely tight in people who cough a lot, who hunch over screens, or who breathe shallowly through the upper chest. That overlap between the traditional indication and the ordinary mechanics of a strained upper back is part of why the point remains so widely used.

What follows is finger pressure only. Nothing here involves needles, and nothing here is a substitute for inhalers, antibiotics, or any treatment a clinician has prescribed. Acupressure at BL13 is best understood as a comfort measure and a self-care habit layered on top of proper medical care — not instead of it.

How do I actually locate BL13 on my own back?

BL13 is defined by a spinal level, so the whole trick is finding the right vertebra. The illustration for this entry is a shared back-shu diagram showing the ladder of points beside the spine; use it alongside these steps.

• Start at the bony bump at the base of the neck. Tip your chin toward your chest and run a finger down the back of your neck. The most prominent knob you meet where the neck joins the back is usually the seventh cervical vertebra (C7). If two bumps are close together, the one that moves less when you turn your head is the lower one.
• Count down three bumps. Below C7 come T1, T2, then T3. BL13 sits level with the space just below the pointed tip of the T3 spinous process.
• Cross-check with the shoulder blade. Feel the hard horizontal ridge on the upper part of your shoulder blade — the spine of the scapula. Trace it inward toward the backbone. Where that line meets the spine is very close to the T3 level. This is the single most reliable landmark for most people and is worth trusting over miscounted vertebrae.
• Move sideways. From the midline, go out about 1.5 cun — a personal unit, roughly the combined width of your index and middle fingers at the knuckle. On most adults this is about 3-4 cm, or two finger-widths, to either side of the spine.
• Confirm by feel. You should land in the muscular gutter between the spine and the inner edge of the shoulder blade, not on bone. Pressing there often produces a distinct dull, deep, slightly achy sensation that may spread across the upper back. That ache is the traditional sign you are on the point.
• Both sides count. BL13 is bilateral. Work the left and right together or one after the other.

If you cannot reach your own upper back — and many people cannot comfortably — this is a point best delivered by another person, or approached with a tool or a wall, as described below.

What is the correct way to apply pressure to BL13?

1. Choose a position that opens the upper back. Sitting on a chair leaning slightly forward with forearms on a table works well, as does lying face down on a bed with a pillow under the chest. Both let the paraspinal muscles soften so your pressure reaches something.
2. If someone is helping you: they place their thumb pads on the point on each side of the spine, angled slightly inward toward the midline but never pressing on the bony spine itself. Pressure goes straight down toward the table, not sideways into the ribs.
3. Build pressure gradually over about five seconds until you reach a sensation that is a firm, satisfying ache — commonly described as "hurts good." On a scale of ten, aim for four to six. Sharp, bright, or electric pain means back off immediately.
4. Hold for 30 to 60 seconds, then release slowly over a few seconds. Repeat three to five times per side. Total session time of five to ten minutes is plenty.
5. Breathe with the pressure. The traditional instruction is to press on the out-breath and ease slightly on the in-breath. Slow nasal breathing, four counts in and six out, is part of the technique rather than an optional extra.
6. Working alone: stand with your back against a wall and place a tennis ball or firm massage ball between the wall and the point. Lean back, find the tender spot, and hold. Sink your weight rather than rolling vigorously. A cane-style back tool or a knuckle reached over the shoulder are other options.
7. Add warmth. A hot water bottle, heat pad, or warm shower spray over the upper back before or after pressure is entirely consistent with traditional use of this region and often makes the muscles more receptive.
8. Finish with movement. A few slow shoulder rolls and one or two gentle chest-opening stretches help the area settle.

Frequency: once or twice daily during a cough or a tight-chested spell, or a few times a week as general upper-back care. Stop if pressure makes coughing or breathlessness worse.

What is BL13 traditionally used to help with?

1. Cough of many kinds. This is the flagship traditional indication. Old texts list BL13 for dry cough, productive cough, lingering cough after a cold, and cough that worsens at night. In practice it is used as a comfort measure alongside whatever a clinician has advised, not in place of it.
2. Wheeze and chest tightness. Traditional sources describe BL13 for "dyspnoea" and asthma-type patterns. It is important to be blunt here: acupressure does not open airways in an attack and must never delay a reliever inhaler or emergency care. Its traditional place is in the quiet periods between, as part of ongoing self-care.
3. Upper back and interscapular tension. Whatever one makes of the organ theory, the point sits on muscles that are genuinely tight in people who cough repeatedly, sit hunched, or breathe high in the chest. Firm sustained pressure to a tender paraspinal spot is a plausible way to ease that mechanical ache.
4. Feeling of shallow, effortful breathing. Because the technique pairs pressure with slow extended exhalation, users often report the breath feeling roomier afterward — an effect at least partly attributable to the breathing itself.
5. The early stage of a common cold with chills, stiff upper back and a scratchy chest. Traditionally BL13 is warmed and pressed at this stage as a "release the exterior" measure.
6. Night-time restlessness during a chest cold, where a short warm session before bed is used as a settling ritual.
7. Post-viral fatigue with a weak, breathy voice — a traditional "lung qi deficiency" picture, treated with lighter, longer, warmer pressure rather than deep work.

Across all of these, the honest framing is: strong and consistent traditional standing, modest and uncertain trial evidence, and no promise of any particular result.

Can regular work at BL13 prevent anything?

• Traditionally, yes — susceptibility to colds. Classical practice treats the upper back around BL13 as the doorway through which wind and cold enter, and recommends keeping it warm and covered in windy or cold weather. Regular warming and pressure here is a long-standing preventive habit. Modern trial evidence for reduced infection rates is not available, so this remains a tradition-based practice.
• Build-up of upper-back stiffness. A few minutes of pressure and stretching a few times a week plausibly keeps the interscapular muscles from tightening into a chronically sore band, particularly for desk workers and drivers.
• Drift into shallow chest breathing. Because the routine anchors slow diaphragmatic exhalation to a physical cue, it can serve as a repeated reminder to breathe low and slow rather than high and fast.
• Neglect of a warning sign. Handling the point regularly makes you familiar with your own baseline. A new, one-sided, or sharply different pain in this region is then noticeable — and noticing it is a reason to see a clinician, not to press harder.
• It does not prevent asthma attacks. Nothing in this routine should be treated as a substitute for controller medication, an action plan, or a reliever inhaler. Preventive medication prescribed for asthma should continue exactly as directed regardless of any acupressure practice.
• It does not prevent pneumonia, bronchitis, or any infection, and it does not shorten one once established.

The useful summary: treat BL13 as a maintenance and comfort habit with deep traditional roots, not as a shield.

What practical tips make BL13 work better?

• Recruit a partner. BL13 is genuinely awkward to self-treat. Thirty seconds of another person's thumbs beats five minutes of contorting.
• Use the scapular spine shortcut. Counting vertebrae goes wrong easily. The inner end of the shoulder-blade ridge lands you at roughly the T3 level in seconds.
• Warm first. A hot shower, heat pad, or even a warm towel over the upper back for five minutes makes the tissue far more responsive and matches traditional practice for this region.
• Let the exhale lead. Sinking pressure on a long out-breath is more comfortable and more effective than pressing against a held breath.
• Angle inward and downward, never outward. Pressure directed sideways into the ribs is uncomfortable and pointless; the target is the muscular gutter beside the spine.
• Combine with neighbouring points if you like. Traditional pairings include the ladder of shu points just below, and the point in the hollow beside the sternum on the front of the chest, for a front-and-back approach.
• Keep sessions short and regular. Five minutes daily is more useful than twenty minutes once a week, and far less likely to leave you bruised.
• Expect next-day tenderness the first few times. Mild muscular soreness after firm work is normal; reduce pressure at the next session.
• Cover the area in cold wind. A scarf or collar over the upper back is the oldest advice attached to this point and costs nothing.
• Keep your inhaler with you if you use one. Acupressure changes nothing about that.

What do people get wrong with BL13?

• Pressing on the spine itself. The bony midline knobs are not the point. BL13 is a finger-and-a-half out to the side, in muscle. Pressing bone is uncomfortable and does nothing useful.
• Going too high. Many people land on the shoulder-top muscle near the base of the neck. That is a different area entirely. BL13 is level with the ridge of the shoulder blade, well below the neck.
• Miscounting the vertebrae. The prominent bump at the neck base is C7, not T1. Counting from the wrong start puts you one level off in every direction. Cross-check with the shoulder blade.
• Grinding and rolling aggressively. Sustained, still, sinking pressure is the technique. Vigorous rolling on a ball creates bruising and irritation without adding benefit.
• Chasing pain. More pressure is not more effect. A four-to-six-out-of-ten ache is the target; sharp or radiating pain means stop.
• Treating it as a rescue measure for breathlessness. This is the most dangerous error. If breathing is difficult, use prescribed medication and get help. Acupressure is not an airway treatment.
• Reducing or skipping prescribed medication because the pressure feels helpful. Any change to asthma or other treatment belongs with the prescribing clinician.
• Working through skin problems. Rashes, broken skin, burns, sunburn, or infected spots in the area mean leave it alone.
• Ignoring a new pain. Unexplained mid-back pain, especially with fever, weight loss, night pain, or numbness in the limbs, needs assessment rather than massage.
• Expecting a fast dramatic change and abandoning the practice when it does not arrive.

What does experience with BL13 actually look like?

The following are composite illustrations drawn from ordinary clinic and self-care practice, not reports from published trials, and no outcome described here should be expected. A woman in her forties, three weeks into a nagging dry cough after a viral chest infection, was shown the point by a practitioner and had her partner apply warm compresses and thumb pressure for five minutes each evening. She described the upper back as "less like a plank" and said the pre-sleep session became a settling routine; the cough itself resolved on its own timeline over the following fortnight, as post-viral coughs generally do. A second illustration: a man in his thirties with well-controlled asthma who worked long hours at a laptop found that his chest felt tight and his upper back sore by mid-afternoon. He began leaning against a ball on a doorframe at the T3 level for a minute on each side twice a day, paired with slow exhalations, and reported that the muscular tightness eased and that he was more aware of when he had slipped into shallow chest breathing. Importantly, he continued his preventer inhaler unchanged and kept his reliever with him; his practitioner was explicit that the acupressure addressed comfort and posture, not airway function. A third: an older man with a chronic productive cough began using BL13 pressure and found it briefly triggered coughing. He reduced pressure, moved to gentle warmth only, and mentioned the cough to his doctor, who arranged investigation — the correct sequence. These sketches show the realistic register of this point: comfort, muscular ease, and a breathing ritual, layered on top of proper medical care rather than replacing any part of it.