The amount of physical damage one can do with a single hand in a single motion is limited. Aiming for vulnerable spots, like the neck, helps. This skill extends that thinking to the next level. By trying to hit the two major arteries on the side of the neck, you can throw off the rhythm of your enemy's pulse there. In a heated battle, even a short stutter in the flow of blood to the brain can cause exceptional damage and distracting pain.