When working with the Breath in Āsana,
it’s perhaps less appealing initially,
but ultimately more attractive, satisfactory
and effective, to integrate a Bhāvana on
the Samāpatti of Śaithilya and Ananta,
within a developmental Prāṇāyāma Sādhana,
focused towards the Siddhi of Dīrgha or Length,
supported by its counterpoint, Sūkṣma or Subtlety.
– Paul Harvey on Yoga Sūtra Chapter Two verse 50

Paul’s Yoga Mālā – A Thread of Pearls from Patañjali’s Yoga Sūtra