At an international Sufi retreat in September last year at Haus Ananda, I was delighted to experience the Sufi Elemental Healing Breath.
The Sufi Elemental Healing Breaths consist of a sequence of five types of breaths, each pertaining to the elements earth, water, fire, air, and ether. They were brought to the West by Professor Hazrat Inayat-Khan in the early 1900s. These elemental healing breaths cover all the different ways in which air can travel in and out of the body: breathing through the nose, breathing through the mouth, and a combination of both. Combined with paying attention to the sensation, the sound of the breath, and imagining the different elements, the elemental healing breaths connect human beings with nature within and without themselves.
They are practiced in the following order and traditionally at the beginning of the day:
Earth breath: in through the nose, out through the nose: connecting and stabilizing quality
Water breath: in through the nose, out through the mouth: slow and steady with a dispersive and purifying quality
Fire breath: in through the mouth, out through the nose: an energetic, charging in-breath and a controlled out-breath
Air breath: in through the mouth, out through the mouth: a limitless, boundless quality and sensation of air
Ether breath: in through the nose, out through the nose: letting the breath flow through, the essence of life in which all the elements come together.
Source: https://www.spiritofchange.org/sufi-element-breaths/