“And, in the Prāṇāyāma also, the different types, like Vaikharī,
the different Vṛtti, the different Krama, he put them all into practice.
One of the greatest contributions, I would say, of Krishnamacharya to Prāṇāyāma,
is the use of Bāhya Kumbhaka, and the importance of Recaka, or exhalation.”
– TKV Desikachar from lectures on ‘The Yoga of T Krishnamacharya’,
given at Zinal, Switzerland 1981.