“Prāṇa is simply the expression of Puruṣa in all parts of the body and beyond.
This Prāṇa has an intimate relationship to the mind
because the Puruṣa sees only through the mind.
Thus Prāṇa, mind and breath are interrelated.
Whatever happens in the mind influences the breath.”
– TKV Desikachar Religiousness in Yoga Chapter Ten Page 135