Yinxi

What is HT6?

HT6 (Yinxi) is the xi-cleft point of the Heart channel, sitting on the palm side of the forearm about half a thumb-width above the wrist crease.

Its name is usually translated as "Yin Cleft". In classical Chinese medicine, xi-cleft points are described as places where the channel's qi gathers deeply, and they were reached for in sudden, acute or bleeding-type problems. HT6 was linked in particular to night sweats, hot flushes, palpitations (a thumping or racing heartbeat), chest discomfort and sudden loss of voice.

That long traditional pedigree is worth knowing, but it is not evidence that pressing the point does anything, and it is not evidence that pressing it is safe for you. Those are two separate questions, and this page keeps them separate. We only mention it here, so you will not see the same warning at the top of every section below.

The honest verdict on the evidence: there is essentially no controlled human research testing finger pressure on HT6 for any condition. What little acupuncture research touches HT6 uses it inside a multi-point prescription, which cannot tell you what this one spot contributed. So the evidence grade here is "insufficient", while the traditional standing is solid but secondary — HT6 is taught in every curriculum, yet it is used far less often than its neighbour HT7.

Everything described on this page is self-applied finger pressure on intact skin. Nothing here involves needles, heat, cupping or anything that breaks the skin. HT6 sits close to the ulnar nerve and the ulnar artery, so the practical advice below is about pressing gently and knowing when to stop.

If you came here from a video promising HT6 fixes anxiety, insomnia or heart problems, read the "What do people get wrong" section first. Acupressure is a low-risk self-care habit, not a treatment for a heart condition, and it should never replace care you actually need.

Where is HT6 and how do you find it?

HT6 sits on the palm side of the forearm, just above the wrist crease, on the thumb side of the big tendon running to the little-finger edge of your wrist.

• Turn your palm up. Rest your forearm on a table, palm facing the ceiling, wrist relaxed and slightly supported. You want the muscles soft, not braced.
• Find the pisiform bone. Run a fingertip along the little-finger side of your palm until you meet a small, hard pea-sized knob just past the wrist crease. That is the pisiform, and it is your anchor.
• Find the tendon. Bend your wrist slightly towards the little finger against gentle resistance. A firm cord pops up running into that pea-shaped bone — the flexor carpi ulnaris tendon.
• Slide to the thumb side of that cord. Immediately on the thumb side of the tendon, right on the main wrist crease, is HT7. Keep that spot in mind as a signpost only.
• Move up half a thumb-width. From the crease, travel up the forearm (away from the hand) about 0.5 cun — roughly half the width of your own thumb at the knuckle, or about 1 cm. Stay in the groove on the thumb side of the tendon. That shallow hollow is HT6.

Measure in your own thumb-widths, not someone else's. A cun is a proportional unit, so a tall adult's half-cun is larger than a child's. HT6 is close to its neighbours: HT7 sits on the crease itself and HT5 is a full thumb-width above it, so a careless slide puts you on the wrong point.

You are feeling for a slightly tender, soft dip between tendon and bone — not for anything that buzzes or zings. A sharp electric feeling shooting into the ring and little fingers means you are pressing the ulnar nerve. Ease off and shift very slightly towards the thumb side.

Both wrists have an HT6. Most people work the one that feels more tender, or alternate sides.

How do you apply pressure to HT6?

1. Settle first. Sit down, rest the forearm on a table or your lap, palm up. Pressing a tense, unsupported arm makes the landmarks harder to feel.
2. Use the pad of your thumb. Place the soft pad — not the nail or the tip — into the hollow half a thumb-width above the wrist crease, on the thumb side of the tendon. Your other fingers can cradle the back of the forearm.
3. Press in slowly and straight down. Build pressure over two or three seconds. Aim for a firm, dull ache you would rate about 3 or 4 out of 10. It should feel like a deep press, never like a pinch or a sting.
4. Hold or circle. Either hold steady for 30 to 60 seconds, or make small slow circles without the thumb sliding over the skin. Breathe out slowly as you press.
5. Release gradually. Let the pressure off over a couple of seconds rather than lifting suddenly. Rest for about 20 seconds.
6. Repeat a few rounds. Two to four rounds per wrist is plenty. Many people then do the same on the other arm.
7. Keep sessions short. A total of two to three minutes per wrist, once or twice a day, is a sensible ceiling for self-care.

Stop straight away if you feel electric tingling, numbness, or pins and needles running into the ring and little fingers. That is the ulnar nerve, which passes close to this part of the wrist, and nerves do not like being leaned on. Shift slightly towards the thumb side or stop for the day.

Stop also if the skin reddens and stays sore, if a bruise appears, or if the ache persists after you let go. Lighter pressure held longer beats hard pressure held briefly, and there is no benefit to pushing through pain.

Keep nails short, work on clean intact skin, and do not use a hard tool, pen cap or massage gun on this spot. Fingers give you feedback that a tool does not.

What is HT6 traditionally used for?

• Night sweats. This is the classical headline use for HT6, described as sweating during sleep from "yin deficiency heat". No controlled human trial has tested finger pressure on HT6 for night sweats, so this remains a traditional claim only. New, drenching or unexplained night sweats need a medical opinion, not a wrist point.
• Hot flushes. Later practice extended the night-sweat idea to menopausal flushing. Acupuncture trials for hot flushes exist, but they needle several points at once and report mixed results, so they cannot tell you what HT6 alone does.
• Palpitations and chest unease. As a Heart channel point, HT6 was used for a thumping or racing heartbeat and a tight, anxious feeling in the chest. There is no human evidence that pressing it changes heart rhythm. Palpitations with chest pain, breathlessness or fainting are an emergency, not a self-care situation.
• Anxious restlessness. Tradition groups HT6 with points said to "calm the spirit". Any calming you notice is most likely the general effect of sitting still, slowing your breathing and applying steady touch — real and useful, but not specific to this point.
• Sudden loss of voice. Classical texts list HT6 for voice lost abruptly, a xi-cleft style acute indication. There is no modern research on this at all, and hoarseness lasting more than three weeks should be checked by a doctor.
• Bleeding signs. Older sources mention HT6 for coughing or vomiting blood, reflecting the classical role of xi-cleft points in acute bleeding. Treat this as history, not advice: any blood in vomit or sputum is an urgent medical problem.
• Wrist and forearm tension. A practical modern use is simple local massage. Gentle pressure around the tendons and the inner wrist can feel loosening after typing or gripping, which is ordinary soft-tissue comfort rather than a channel effect.

Across every item above, the pattern is the same: a long tradition, no point-specific controlled evidence. Treat HT6 as a calming self-care ritual that may feel pleasant, and keep your real diagnoses with your doctor.

Are there tips for using HT6 effectively?

• Anchor on the pisiform every time. Re-find the pea-shaped bone and the tendon before each session. Guessing from memory is how people drift onto HT7 or HT5 without noticing.
• Use your own thumb as the ruler. Half a cun means half of your own thumb width at the knuckle. Borrowing someone else's measurement from a video puts you in the wrong hollow.
• Let the tenderness guide you. Within that small groove, the spot that feels slightly more sensitive under steady pressure is usually the one worth working. Sharp pain is a different signal and means move.
• Pair it with slow breathing. Press as you breathe out, release as you breathe in. If HT6 helps you feel steadier, the paced breathing is doing much of the work, and that is fine.
• Work both wrists. Doing the left and then the right keeps the session balanced and stops you overworking one small patch of skin.
• Keep it short and regular. Two or three minutes a side, once or twice daily, beats one long hard session. Tendon-dense areas get sore quickly.
• Go easy if you type all day. If your wrists already ache from keyboard or tool use, use lighter pressure and shorter holds, and skip days when the forearm is tender.
• Choose a calm moment. Evening, before bed, or during a break works better than pressing while walking or driving. You need to feel the landmark to find it.
• Keep a simple note. If you are using HT6 for night sweats or restlessness, jot down how you slept for two weeks. Honest notes tell you quickly whether it is worth continuing.
• Do not stack it with heat or tools. Fingers only. Heat packs, hard massage gadgets and percussion devices on the inner wrist add risk over a nerve and artery without adding anything useful.

If a few weeks of consistent, gentle practice changes nothing, that is a reasonable answer in itself. Stopping is not failure, and no point works for everyone.

What do people get wrong with HT6?

• Expecting a cure. The biggest error is treating HT6 as a fix for palpitations, menopause or anxiety. Acupressure is a comfort practice with thin evidence, and nothing on this page cures anything.
• Landing on HT7 instead. HT7 sits right on the wrist crease. HT6 is half a thumb-width above it. Most people who think they are on HT6 are actually on the crease.
• Drifting up to HT5. A full thumb-width above the crease is HT5, a different point with different traditional uses. The gap between the three points is small, so measure rather than estimate.
• Sitting on the wrong side of the tendon. HT6 is on the thumb side of the flexor carpi ulnaris tendon, not the little-finger side. Cross that cord and you are off the channel entirely.
• Pressing until it zings. Electric tingling into the ring and little fingers means the ulnar nerve, not a successful point. People mistake that buzz for a sign it is working and keep pushing.
• Using hard tools. Pen caps, knuckles and massage guns on a thin-skinned wrist over a nerve and artery cause bruising and nerve irritation. Thumb pads only.
• Ignoring real symptoms. Pressing HT6 instead of calling for help with chest pain, or instead of getting drenching night sweats investigated, is the one mistake that can genuinely harm you.
• Overdoing the first session. Fifteen minutes of hard pressure on day one usually produces a sore, bruised wrist and nothing else. Short and gentle wins.
• Treating tradition as proof. Finding HT6 in a classical text tells you it was used for centuries. It does not tell you it works, and it does not tell you it is safe for your particular wrist.
• Skipping the other wrist. People work only their dominant side out of habit. Alternating spreads the load and keeps the skin happier.

What does the research on HT6 actually say?

No useful human research testing HT6 on its own was found. There are no controlled trials of finger pressure on HT6 for night sweats, hot flushes, palpitations, anxiety or voice loss that would let anyone say what this point does.

Where HT6 shows up in the acupuncture literature at all, it is as one item inside a multi-point prescription chosen by a practitioner — for example in trials of acupuncture for menopausal hot flushes, where several points are needled in the same session. Those studies report the package, not the part. Even when such a trial shows a benefit, there is no way to separate HT6's contribution from the other points, the practitioner contact, or the expectation of improvement.

That matters because acupressure research as a whole has known weaknesses. Most studies are small, the participants know whether they are pressing or not, and follow-up is measured in days or weeks. Sham controls for pressure are hard to build convincingly. Subjective outcomes like sweating, restlessness and sleep quality are exactly the ones most moved by expectation.

It is also worth being clear about what does not transfer. PC6 has genuinely good controlled evidence for nausea and vomiting, which is the strongest case in the whole acupressure literature. HT7 has a scattering of small sleep and anxiety studies of modest quality. Neither result tells you anything about HT6. Points are not interchangeable, and borrowing a neighbour's evidence is one of the commonest distortions in online acupressure content.

What this absence means in practice: HT6 is not a proven treatment for anything, so it should sit alongside medical care rather than in place of it. Equally, gentle finger pressure on intact skin at this location is low risk for most healthy adults. If you want to try it for a few weeks as a calming routine and judge for yourself, that is a reasonable thing to do — provided your symptoms have been properly assessed first.