In total silence he perceived a distant melody. It could be coming from the stars, from the bottom of the sea or from the night itself... It was not like any other, not even like the purring of the sea on tranquil nights before the storms... Juan sang drawn by the music that reached him, and, like the night, his song made him brother to the trees, the seagull, the mollusks, the wild flowers that spring up in the sand. "This melody is the murmur of the sea that covers all humankind."
Breathing is one internal function that the conscious mind can control with comparative ease. The effect of controlled breathing is almost like communication with all conscious parts of one's being saying to them, "Simmer down and listen; there is something beyond the turmoil". It is communication in action that often works when words merely go in one ear and out the other, not even changing the cognitive mind. In essence, the effect is to turn all the elements of our will toward stillness and waiting.