नाडीजलोदराधातुगतदोषविनाशनम् । गच्छता तिष्ठता कार्यं उज्जाय्याख्यं तु कुम्भकम् ॥ २.५३ ॥

nāḍījalodarādhātugatadoṣavināśanam । gacchatā tiṣṭhatā kāryaṃ ujjāyyākhyaṃ tu kumbhakam ॥ 2.53 ॥

Ujjayi Kumbhaka destroys defects of the nâdîs related to water in the belly, and disorders of the Dhâtus (the living tissues). Therefore, Ujjâyî should always be performed, including while walking, standing or taking other action.