Before studying Prāṇāyāma one must understand something about the breath.

seated_pranayama_2

“Before studying Prāṇāyāma one must understand something about the breath.”
TKV Desikachar Switzerland 1978

The traditional model, Śikṣaṇa, for Yoga was to stay in a posture……

The traditional model, Śikṣaṇa, for Yoga was to stay in a posture

“The traditional model, Śikṣaṇa, for Yoga was to stay in a posture,
Krishnamacharya introduced movement in the postures.”
From study notes with TKV Desikachar England 1992