The Bhagavad Gita says, "Yogah Karmasu Kaushalam" – Yoga is skill in action.

 

It does not matter what you do; what matters is that whatever you do, first know it well (proficiency) and then apply it to the best of your abilities (efficiency).

 

Dhanurvidya (the art of Self-defence) embodies these principles, bringing forth both proficiency and efficiency in its practitioner.