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.
A few girls were taken to a performance of Johannes Brahms' "Requiem." Teak was the youngest to go, and she sat next to Frau professor. Teak had never been to a concert before. The music was so awesome, so profound, so moving and stirring that Teak's eyes filled with unexpected tears, and she was grateful when the old woman put her arm around her shoulder as if she understood. The muscc to Teak was like an opening into what she thought heaven might be like. Brahms came like a thundering revelation.