This kriya will balance the 5 praanic vayus (praana, apaana, samaana, udaana, vayaana) by activating the Pingala (right), Ida (left), and Sushmana (central) channels.
Taken from KRI “Pranna, Praanee, Praanayam”, p.11-15
Kundalini practice from the teaching of Yoga Bhajan