Most modern people use chest breathing, which is easy and effortless. They take it for granted that breathing is easy. Breathing in this way, the chest rises and falls as you inhale, and most of the air only goes into the upper part of the lungs, making effective ventilation impossible. However, the correct breathing should be the use of abdominal breathing, when inhaling abdominal bulge, will make the diaphragm below the lungs down, a lot of air in the lungs, when exhaling the abdomen naturally concave, so that the diaphragm rises, compression of the lungs, out of the air. Use the diaphragm to rise and fall for more efficient breathing, receiving more oxygen.