Back pain is the leading cause of disability in Canada according to Statistics Canada, affecting about 4 in 5 Canadians at some point in their lives. The wait times for physiotherapy, pain clinics, and specialist referrals in most provinces are — let's be honest — genuinely terrible. So people look for things they can do themselves. Acupressure is one of the few self-care options with enough research behind it to recommend with a reasonably straight face.
What surprised us when reviewing the literature is how consistently three particular acupressure points appear across studies: GB 21 (upper back and neck tension), BL 23 (lumbar region), and BL 40 (acute lower back pain). These aren't just TCM tradition — they map to anatomical areas with high concentrations of myofascial trigger points and nerve endings that respond to pressure through well-understood mechanisms.
The Evidence: What We Actually Know
A 2014 study by Yip and Tse published in Complementary Therapies in Clinical Practice found that acupressure produced significantly greater pain relief than physical therapy alone for chronic low back pain, with effects persisting at 6-month follow-up. The sample was 146 participants — not huge, but one of the larger controlled trials in this space. Effect size was meaningful: about 1.5 points lower on a 10-point pain scale.
A more recent 2019 systematic review in BMC Complementary Medicine and Therapies by Li and colleagues surveyed 14 randomized controlled trials and concluded acupressure was more effective than sham acupressure for immediate pain relief, though the long-term evidence is weaker. The honest caveat here: most trials are short (4–8 weeks), practitioner-administered, and difficult to blind properly. Home self-application has less direct evidence, though the mechanisms are the same.
Point 1 — GB 21 (Jianjing)
Where to find it
The midpoint of the trapezius muscle — halfway between the base of your neck and the tip of your shoulder. If you reach across your body and squeeze the top of your opposite shoulder, the point that instinctively feels tender under pressure is usually it. It sits above the brachial plexus and directly over the upper trapezius belly.
How to apply pressure
Apply firm downward pressure with your middle finger (supported by your index finger on top) for 30–60 seconds. Breathe slowly. The sensation should be a deep ache — TCM describes this as "de qi," but practically it just means you've found the right spot and the nerve is responding. Don't press so hard it's acutely painful. Repeat on both sides. This can also be done by a partner pressing with their thumbs while you sit in a chair — much easier to access properly that way.
What it helps
Upper back tension, neck pain radiating from the shoulders, stress-related muscle tightening through the upper back. Also commonly used for tension headaches that originate in the neck and shoulders rather than the temples.
Point 2 — BL 23 (Shenshu)
Finding BL 23
On either side of the spine at the level of the second lumbar vertebra (L2) — approximately at the level of your belly button, about 1.5 inches (4 cm) out from the midline of the spine on each side. This puts it over the erector spinae muscle group, lateral to the L2 spinous process. If you place both fists against your lower back, knuckles facing in, the approximate position is where your middle knuckles land.
Ways to work the area
The self-application challenge here is access. Options:
- Lie on your back with two tennis balls (or a purpose-built acupressure ball roll) placed at BL 23 on either side, and let your body weight provide the pressure for 3–5 minutes
- Use both thumbs reaching around from the sides of your torso while seated, though this gets awkward and tiring quickly
- An acupressure mat laid on a firm surface is actually one of the more practical ways to stimulate this area — the mat spikes hit the general region even without precision placement
Partner application (thumbs pressing simultaneously on both points) is considerably more effective and much easier to sustain for the necessary duration.
When it tends to help
Chronic lumbar ache, fatigue-related back pain, kidney area tension. In TCM, BL 23 is one of the most important back points for anything associated with the lumbar region. Anatomically, it corresponds to a zone of high trigger point density in the erector spinae and multifidus muscles — which are chronically overloaded in people who sit for work.
Point 3 — BL 40 (Weizhong)
Where it sits
Exactly in the centre of the back of the knee — the midpoint of the popliteal crease when the knee is slightly bent. There's often a pulsation you can feel from the popliteal artery nearby. The point sits between the biceps femoris and semitendinosus tendons.
How to apply
Sit in a chair and reach down to apply moderate pressure with your middle and index fingers to the centre of the back of each knee. Hold for 30–60 seconds, breathing slowly. You may feel a referral sensation up into the lower back — that referred quality is what you're aiming for. You can also apply pressure while lying on your back with your knees slightly raised.
Don't apply deep, sustained pressure here if you have varicose veins in the popliteal fossa — the venous structures are superficial in that area.
Good for
Acute lower back spasm, sciatica-type pain (the Bladder meridian runs down the posterior leg along the path of the sciatic nerve distribution), and stiffness after prolonged sitting. This is probably the most surprising point for people new to acupressure — it works at a distance from the pain location, which is one of the genuinely interesting features of distal acupressure points. The neurological explanation involves referred sensation pathways and somato-visceral reflexes, not magic.
Building a Routine
For chronic back pain, consistency matters more than session intensity. A reasonable approach:
- Start with BL 40 seated (easiest to access yourself)
- Move to GB 21 with opposite-hand thumb pressure for both sides
- Finish with BL 23 using a rolled towel or tennis balls while lying down
- Total time: 10–12 minutes daily
Most people who try this consistently for two weeks notice something. Whether that something is clinically meaningful depends on the severity of your back condition — if you have a disc herniation or stenosis, acupressure is adjunctive at best, not a substitute for imaging and proper management.
Acupressure Mats for Back Pain
For BL 23 especially, an acupressure mat is more practical than self-application for sustained stimulation. Lying on a mat for 15–20 minutes reaches the lumbar region with thousands of small pressure points simultaneously. Our mat comparison guide covers what's available in Canada and what to actually buy.
Shop Acupressure Mats on Amazon.ca →When Acupressure Isn't Enough
If your back pain is severe, accompanied by leg weakness or numbness, involves bladder or bowel changes, or came on after an injury or fall — see a physician. Acupressure is a complement to appropriate medical care, not a reason to delay getting a proper diagnosis. Most Canadian physiotherapy clinics now offer some form of manual therapy including trigger point work that overlaps with these techniques, often covered under extended health benefits.