Yin Cleft (HT-6) Pressure Point: Benefits & Technique

The Yin Cleft pressure point (HT-6, Yinxi) is a Heart meridian point on the inner wrist that may help calm anxiety, ease Heart-related chest discomfort, and reduce night sweats when used with steady, gentle pressure.

In Traditional Chinese Medicine (TCM), HT-6 is also called Yinxi (Yin Cleft) and is classified as the Xi-Cleft (accumulation) point of the Heart (Hand Shaoyin) meridian. Xi-Cleft points are traditionally used for more acute, “sudden” conditions, especially those involving Qi and Blood changes along the channel. In modern acupressure practice, it’s most often explored for stress-related palpitations, sleep disruption with sweating, and agitation—while staying mindful that research on HT-6 specifically is limited.

Summary Table

Attribute	Details
Pressure Point Name	HT-6 – Yin Cleft (Yinxi)
Body Area	Wrist (palmar/inner wrist)
Exact Location	Inner forearm, about 1 finger-width above the wrist crease, near the flexor carpi ulnaris tendon (thumb-side edge of that tendon)
Common Uses	Heart/chest discomfort, night sweats, nosebleed tendency (upward bleeding), anxiety/restlessness, insomnia with heat signs
Stimulation Technique	Firm thumb or finger pressure, 1–3 minutes, steady or small circles
Contraindications	Use gentle pressure due to nearby ulnar artery/nerve; caution with bleeding disorders or anticoagulants; avoid pressing on inflamed/injured tissue

Clinical Significance of the Yin Cleft Pressure Point (HT-6) & Associated Conditions

In TCM, the Heart meridian is closely tied to Blood circulation and the Shen (mind/spirit). The Yin Cleft pressure point is traditionally selected when symptoms suggest:

• Heart Yin deficiency with Empty-Heat: night sweats, “heat” sensations at night, restless sleep, irritability, a feeling of internal agitation
• Heart Qi/Blood disharmony: palpitations, chest tightness, or episodic chest discomfort (especially when stress, poor sleep, or overheating are triggers)
• Rebellious Qi or upward bleeding patterns: nosebleeds or spitting blood described in classical indications (this is a traditional framework; medical evaluation is essential)

From a practical perspective, HT-6 is often used as a supportive self-care point when someone feels “wired but tired”—anxious, overstimulated, or sweaty at night—particularly when symptoms cluster around sleep + autonomic arousal.

Location

HT-6 (Yin Cleft / Yinxi) is on the inner (palmar) side of the forearm, just above the wrist crease.

To find it accurately:

1. Turn your palm up and relax your wrist.
2. Identify the wrist crease (the main crease where the hand meets the forearm).
3. Move about 1 finger-width (roughly 1 cm) up the forearm from the crease.
4. Feel for the flexor carpi ulnaris tendon on the pinky-side of the wrist (it becomes more distinct if you gently flex the wrist or bring the pinky side slightly toward you).
5. HT-6 is in a small groove just toward the thumb-side edge of that tendon, on the Heart meridian line leading toward Spirit Gate (HT-7) (HT-6 sits just above it).

Anatomy note: This area is close to the ulnar artery and ulnar nerve, which is one reason the point can feel sensitive. Aim for firm but controlled pressure, not deep digging.

How to Stimulate It

Use acupressure on HT-6 with a calm, consistent technique. Because of nearby neurovascular structures, I recommend steady pressure over aggressive force.

Standard technique (thumb/finger pressure):

1. Sit comfortably with your palm facing up and wrist in a neutral or slightly extended position.
2. Place your thumb pad on HT-6.
3. Press straight down (perpendicular) with firm, tolerable pressure—about a 5–7/10 intensity (strong but not sharp).
4. Hold for 1–3 minutes, breathing slowly. You can use:
   • Static hold (best for calming)
   • Small circles (best if the area feels tight or tender)

Frequency

• 1–3 minutes per side, 1–3 times daily
• For night sweats or sleep support: consider a session 30–60 minutes before bed

What you may feel (Deqi-style response)

• Local heaviness, warmth, dull ache, or a mild radiating sensation toward the forearm or little finger can occur. Sharp pain, electric zings, numbness, or throbbing are cues to reduce pressure or stop.

Common pairings

• With Spirit Gate (HT-7) for anxiety/insomnia patterns
• With Inner Pass (PC-6) for chest tightness, nausea-with-anxiety, or palpitations
• With Shining Sea (KD-6) for Yin deficiency patterns affecting sleep
• With Front-Mu of the Heart (CV-14) in practitioner-guided protocols for Heart Qi constraint

Benefits and Common Uses

The Yin Cleft pressure point (HT-6) is traditionally used for Heart meridian patterns that involve acute disruption (Xi-Cleft function) and Yin/Heat imbalance.

Common uses (TCM + modern self-care framing)

1) Night sweats and heat signs at night

• TCM rationale: nourishes Heart Yin, clears Empty-Heat
• Practical goal: support a calmer downshift into sleep and reduce nighttime overheating sensations

2) Anxiety, mental restlessness, and sleep disruption

• TCM rationale: calms the Shen, regulates Heart Qi
• Practical goal: reduce “revved up” feelings, especially when paired with slow breathing

3) Palpitations or stress-related chest discomfort

• TCM rationale: moves Qi and Blood in the Heart channel; Xi-Cleft points are classically used for acute pain patterns
• Practical goal: supportive regulation during stress episodes (not a substitute for medical care)

4) Nosebleeds (traditional indication)

• TCM rationale: helps subdue rebellious Qi and address upward bleeding patterns
• Practical goal: this is not a first-line self-treatment—persistent or heavy nosebleeds warrant medical evaluation

Related Heart meridian points you may also explore include Lesser Sea (HT-3), Spirit Path (HT-4), and Connecting Li (HT-5)—often chosen based on whether the presentation is more pain-dominant, Shen-dominant, or channel-obstruction dominant.

Physiological Functions & Mechanisms

Direct modern clinical trials on HT-6 specifically are limited, so mechanism discussions are best framed as plausible rather than definitive.

Potential physiological pathways (inferred from anatomy and acupressure research broadly):

• Peripheral nerve modulation: HT-6 lies near the ulnar neurovascular bundle. Gentle mechanostimulation may influence local afferent signaling that can contribute to pain modulation and autonomic regulation.
• Autonomic downregulation: Acupressure and related somatosensory stimulation may support parasympathetic activity (rest-and-digest), which can be relevant for anxiety, palpitations, and sleep disruption.
• Local circulation effects: Pressing and releasing soft tissue may influence microcirculation and perceived warmth/tension in the wrist/forearm region.

TCM functional lens

• As the Heart meridian Xi-Cleft point, HT-6 is classically described as mobilizing Qi and Blood more strongly for acute presentations.
• Its association with Heart Yin deficiency and Empty-Heat aligns clinically with symptom clusters like night sweating, agitation, and insomnia.

Practitioner Insight (first-person allowed here only)

In practice, I find HT-6 is most useful when someone’s symptoms combine restlessness + nighttime sweating or that “can’t settle” feeling in the chest before sleep. A practical tip: use lighter pressure than you think you need, and extend the hold closer to 2–3 minutes while breathing slowly—this tends to work better than short, intense pressing in such a sensitive wrist area.

Safety & Contraindications

HT-6 is generally appropriate for gentle self-acupressure, but it sits in a sensitive region.

Use caution or avoid pressing if:

• You have bleeding disorders, bruise easily, or take blood thinners/anticoagulants (risk of bruising)
• There is local inflammation, infection, recent injury, or post-surgical tissue at the wrist
• You experience sharp pain, numbness, tingling, or “electric” sensations (possible nerve irritation)—reduce pressure or stop
• You have unexplained chest pain, faintness, shortness of breath, or radiating arm/jaw pain: seek urgent medical assessment rather than self-treating

For broader guidance, see our acupressure safety guide and browse more techniques in our acupressure education hub.

As always, listen to your body and stop if discomfort arises.

Related Points & Techniques

If you’re building a short routine, HT-6 often performs best as part of a small “set” rather than a standalone point.

Complementary pressure points (common pairings):

• Spirit Gate (HT-7) for insomnia, anxiety, and emotional regulation support
• Inner Pass (PC-6) for palpitations, chest tightness, nausea-with-anxiety patterns
• Shining Sea (KD-6) for Yin deficiency signs affecting sleep
• Front-Mu of the Heart (CV-14) for Heart-focused Qi regulation (often used in clinical protocols)
• Lesser Sea (HT-3) for Heart channel heat or agitation patterns
• Spirit Path (HT-4) when channel constraint and anxiety overlap
• Connecting Li (HT-5) often used for Heart channel communication patterns (speech/voice, palpitations in TCM frameworks)
• For acute throat/upper heat presentations sometimes discussed in classical systems, explore Lesser Shang (LU-11)

Adjunct techniques

• Breathing: Inhale 4 seconds, exhale 6–8 seconds while holding HT-6 (supports downregulation).
• Gentle wrist opening: Keep the wrist slightly extended to avoid compressing sensitive structures.
• Warmth (careful): Mild warmth to the forearm can feel soothing for Yin-deficiency-type discomfort, but avoid heat if you’re actively flushed or inflamed.

Scientific Perspective

There is limited direct clinical research isolating HT-6 outcomes, so evidence is currently stronger for acupressure as a modality than for this single point. For readers who want an evidence-based frame:

• The NIH National Center for Complementary and Integrative Health summarizes what research suggests about acupuncture/acupressure approaches for pain and related symptoms in its overview of complementary health practices (see the NIH’s acupuncture and acupressure-related resources via the NCCIH research summaries.
• For broader peer-reviewed discussions on acupuncture point stimulation and mechanisms (e.g., neuromodulation and autonomic effects), you can explore indexed research on the PubMed database (search terms such as “acupressure autonomic nervous system” or “acupuncture mechanisms”).

Clinically, the most responsible takeaway is this: the Yin Cleft pressure point may be a low-risk, supportive technique for stress-related symptoms and night sweating patterns, but it should not replace diagnosis or treatment for cardiac symptoms, bleeding disorders, or persistent insomnia.