Difference between revisions of "Snap"
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'''Keage''' (“snap”) is what gives karate techniques their power. Well, not power ''per se'', but [https://en.wikipedia.org/wiki/Impulse_(physics) impulse]. | '''Keage''' (“snap”) is what gives karate techniques their power. Well, not power ''per se'', but [https://en.wikipedia.org/wiki/Impulse_(physics) impulse]. | ||
| − | Impulse the change of an object’s [https://en.wikipedia.org/wiki/Momentum momentum] due to a [https://en.wikipedia.org/wiki/Force force] acting over some time interval; I = Δp = ∫F dt. Since your strike stops, it transfers all of its momentum, so Δp is a constant. The only way to increase a technique's force is to decrease the time interval which it acts over. | + | Impulse is the change of an object’s [https://en.wikipedia.org/wiki/Momentum momentum] due to a [https://en.wikipedia.org/wiki/Force force] acting over some time interval; I = Δp = ∫F dt. Since your strike stops, it transfers all of its momentum, so Δp is a constant. The only way to increase a technique's force is to decrease the time interval which it acts over. |
This is achieved by adding a [https://www.youtube.com/watch?v=j_QLzthSkfM whip-cracking] or towel-snapping motion to all techniques. This “snap” is generated by switching from a relaxed state, completely tensing at the exact moment of impact, and back to relaxation as quickly as possible; this necessitates a [[Ibuki#Short_Ibuki|short ibuki breath]]. This should be a total-body spasm-like reaction, similar to a sneeze. This is the trick behind Bruce Lee’s famous [https://www.youtube.com/watch?v=keS3OTNger8 One-Inch Punch]. | This is achieved by adding a [https://www.youtube.com/watch?v=j_QLzthSkfM whip-cracking] or towel-snapping motion to all techniques. This “snap” is generated by switching from a relaxed state, completely tensing at the exact moment of impact, and back to relaxation as quickly as possible; this necessitates a [[Ibuki#Short_Ibuki|short ibuki breath]]. This should be a total-body spasm-like reaction, similar to a sneeze. This is the trick behind Bruce Lee’s famous [https://www.youtube.com/watch?v=keS3OTNger8 One-Inch Punch]. | ||
Latest revision as of 18:51, 18 November 2019
Keage (“snap”) is what gives karate techniques their power. Well, not power per se, but impulse.
Impulse is the change of an object’s momentum due to a force acting over some time interval; I = Δp = ∫F dt. Since your strike stops, it transfers all of its momentum, so Δp is a constant. The only way to increase a technique's force is to decrease the time interval which it acts over.
This is achieved by adding a whip-cracking or towel-snapping motion to all techniques. This “snap” is generated by switching from a relaxed state, completely tensing at the exact moment of impact, and back to relaxation as quickly as possible; this necessitates a short ibuki breath. This should be a total-body spasm-like reaction, similar to a sneeze. This is the trick behind Bruce Lee’s famous One-Inch Punch.
All Goshin-Jutsu Karate techniques snap to some degree, so you must keep practicing this forever. Constant practice is needed to make these motions automatic, and to maintain this skill.
