什么是功夫?

练拳是武功, 对手自己.
练泳是功夫, 对手自己.
没有自我, 达到纯功夫.

Bruce Lee and Ip Man has shown that refined kungfu is not achieve with brute strength, but to practice kungfu, one must keep calm, focus and apply what you practiced.
So if you are swimming via brute strength and without much thought into the process, you will fall into the abyss of brute strength swimming and never really attaining the skill that is essential to water balance, and efficient propulsion in the water.