Part 21 of the Advanced Kyusho Sound Projection Series
This second release from a headlock is using different targets, yet the same sound of "Keeee". This was done to demonstrate that the sounds affect the opponent in a way that any viable nerve target is more susceptible. In this case the body being contracted forward by constriction of the abdominal and frontal body muscles, is weakened as the antagonistic muscles are contracted via the autonomic response. Antagonistic muscles release when the opposite in constricted, thus the back body muscles constricting, relax the frontal body muscles and cause the weakness in them to penetrate deeper into the nerve structures.