ब्रह्मादयोऽपि त्रिदशाः पवनाभ्यासतत्पराः । अभूवन्नन्तकभ्यात्तस्मात्पवनं अभ्यसेत् ॥ २.३९ ॥

brahmādayo'pi tridaśāḥ pavanābhyāsatatparāḥ । abhūvannantakabhyāttasmātpavanaṃ abhyaset ॥ 2.39 ॥

Brahma and the other thirty Devas have been always engaged in the exercise of prânâ due to fear of death. Therefore, one should practice prânâyâma regularly.