Reference · Self-defence
Kyūshō-jutsu (急所術, “vital-point technique”) is directing strikes, presses or grabs at anatomically weak targets to get a disproportionate effect for the force used. It’s genuinely old and a real part of traditional Okinawan and Chinese fighting arts — its best-known home in karate is the Bubishi, the hand-copied anthology nicknamed “the bible of karate,” which contains vital-point diagrams and a tradition of roughly “36 vital points.”
Targeting works — but not for mystical reasons. The targets below are vulnerable because of bone, soft tissue, nerves, blood flow or joints: ordinary anatomy. This is why they show up in practical self-defence, military close-combat and full-contact sport.
| Target | Why it works — ordinary anatomy |
|---|---|
| Eyes | Soft, unprotected — reflexive flinching, tearing and brief vision loss from tiny force |
| Throat / windpipe | Unprotected airway — gagging, coughing, panic; hard strikes risk lethal laryngeal injury |
| Solar plexus | The celiac plexus — a blow spasms the diaphragm (“winding”) and drops blood pressure |
| Carotid / side of neck | Baroreceptor reflex can cause faintness; a blood choke (grappling) is the one truly reliable “pressure” KO |
| Jaw / chin | The classic KO — rotational acceleration of the head, not a mystical nerve point |
| Common peroneal nerve (outer thigh) | The “dead leg” — a hard strike causes pain and the leg to buckle (the Muay-Thai low kick) |
| Brachial plexus (neck/shoulder) | “Brachial stun” — arm numbness and a brief stun; reliability varies |
| Groin, knees, ears, nose, floating ribs, temple | Soft tissue, joints and bone — all plain mechanical/neural vulnerability |
Two honest details worth singling out: the jaw knockout is rotational acceleration of the brain, not a secret point; and the most reliable “pressure” knockout — the carotid blood choke — is a grappling technique used safely every day in judo and BJJ, not a magic strike. For how targeting shows up inside kata, see bunkai.
Where kyūshō crosses from anatomy into mysticism, the evidence collapses. Be sceptical of:
The canonical real-world tests are worth knowing. George Dillman — a real, credentialed karateka whose no-touch claims made him famous — had his no-touch knockout filmed for National Geographic’s Is It Real?; it failed on subjects who weren’t pre-conditioned to fall, and the explanations offered (tongue in the wrong place, alignment “percentages”) are unfalsifiable. Separately, the “no-touch master vs. an MMA fighter” clip most people have seen is the aikido/Daitō-ryū teacher Yanagi Ryūken (not a karateka) — in a 2006 challenge he was beaten easily by MMA fighter Tsuyoshi Iwakura; the “chi” did nothing against a non-compliant opponent. The pattern is consistent: these effects work only on compliant in-group students through suggestion and expectation, and reliably fail on skeptics, strangers and resisters.
Even the legitimate, anatomy-based points are a supplement to sound fighting, not a substitute, and far less reliable in a real fight than in a dojo demo on a static partner:
Bottom line: targeting is a force multiplier layered on top of position, timing and power — not a magic off-switch. Read our honest take on whether karate works for self-defence.
This guide is cross-checked against the references below. Where sources genuinely disagree, that is flagged in the text above rather than smoothed over.