Inhale slowly through the nose to a count of 6 (8 if you want a challenge), contracting the diaphragm and abs so as to fill and expand your lungs and rib cage.
Exhale through the mouth to a count of 6, keeping your shoulders level and spine straight, deflating the lungs only.
You can also practice this on the floor with arms over head.
Andrew Pirozzi
Marc J. Franklin
