A Simple Technique:
Completely Exhale: allowing the abdominal area to be sucked in so as to release air from the lower lungs before collapsing the chest cavity thus releasing air from the upper lungs. When the abdominal area pulls in, this automatically lifts the diaphragm against the lower lungs which releases air.
Fully Inhale: allowing the breath to first fill the lower lungs before filling that portion of the lungs in the upper chest cavity. By doing this properly one should note that the abdominal area will expand before the actual chest cavity.
Breath control functions like a bridge taking one from the conscious to the subconscious and finally through the power of meditation from the subconscious to the super-conscious state.
Whether breathing practices are chosen to overcome stress, to strengthen the respiratory system, to increase energy, or to expand awareness, a wealth of benefits is found.