The proper way to breathe deeply is to make the chest and abdominal muscles of the body do the greatest amount of breathing so that the most oxygen is inhaled and the most carbon dioxide is exhaled. Deep breathing can be done by abdominal breathing, so that the abdomen rises and falls evenly and exhales and inhales normally and slowly. Through deep breathing, the body can obtain more oxygen, promote blood circulation, and discharge carbon dioxide. The specific operation method of deep breathing: take a comfortable position, body relaxation. Chest and abdomen with breathing, do the maximum inhalation action, so that the breath filled with chest, exhaling the gas will be emptied, the order of the first row of the abdomen and then row chest, the process is smooth. Deep breathing gas into the order from the nose to the nasal cavity, chest, abdomen, exhaling carbon dioxide in the reverse order. Deep breathing movements slow, slowly practiced, so that the lungs expand as much as possible, as much as possible to inhale. Breathe deeply, inhale oxygen into the abdomen for 1-2 seconds, then exhale. Deep breathing expands the chest, regulates the heart, brain and lung functions, and helps reduce psychological stress and soothe the mind.