A being which breathes is a living being, and a being which does not breathe is a non-living being.

In addition to simply breathing in oxygen (O2) and breathing out carbon dioxide (CO2), Sun Do sees the breathing mechanism as the Ki respiratory mechanism for living beings. Breathing oxygen is the role of lungs, and the breathing Ki is the role of the Danjeon, our body’s energy center. Sun Do breathing is the way of breathing Ki through the Danjeon.

Living and dying is a reflection of the gathering and dissipation of Ki. Concentration of Ki is life, dissipation of Ki is death. Full of Ki means healthy and vital life, lack of Ki means weakeness and disease, and full dissipation of Ki means the end of life.

An old person with full Ki can be full of vigor and have peachy cheeks under grey hair. He can finish his mission in life and go back to the eternal place without leaving a tomb.

A living being must have a form and a function. The form is the body and the function is respiration, or breathing. A being without a Ki respiratory function is not a living being. Therefore, growth and evolution of a living being is equivalent to the growth and evolution of breathing.

Body and mind are not two different things, but are two different forms of one Ki. Therefore, Sun Do practitioners concentrate on body and mind together and cultivate the body and mind simultaneously.

The Ki of a practitioner and the Ki of the universe are not two different things. Breathing is the only way to connect the practitioner’s Ki and the Ki of the universe. Through breathing, Sun Do practitioner is connected to and can communicate with the universe and all beings in the universe.