Most martial arts at some point get deep into the idea of increasing power. The problem with that is most martial artists delude themselves because they do not have an adrenalized high-risk-of-injury place to test out their practice. When I've worked with people who had an opportunity to test their power four nights a week breaking down doors, they only used the amount of force necessary and it is usually less than a martial artist who is only imagining the usage. Even great martial arts, who perfectly understand how power works, tend to over-power.
That is just a prelude to a misunderstood metaphor which is very common in Chinese martial arts circles. The metaphor is that of a bow shooting an arrow.
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