T Krishnamacharya in Ṣaṇmukhī Mudrā.

Question to T Krishnamacharya –

Q: What must form an essential part of a person’s daily practice?
A: A minimum of ten minutes in Antaḥ Trāṭakam, Ṣat Mukhī Mudrā or Mahā Mudrā is essential.
– Śrī Krishnamacharya – The Pūrnācārya – published by the KYM in 1997