Uḍḍiyāna

it designates a particular position of the abdominal muscles. After first checking the pelvic floor, the base “Mūla”. The second control is at the end of the expiry, (when you are completely unladen) the abdominal ball is called “Uḍḍiyāna”. You extend the space between the iliac crests and sides. Lie the transverse, obliques (internal and external), and rectus.