“Sthira Sukha (Yoga Sūtra Chapter Two verse 46) should both be present in Āsana.
It also implies one should be able to choose the breath ratio.”
– TKV Desikachar England 1980

Yoga Sūtra Chapter Two verse 46 Sthira Sukham Āsanam
“Means what happens before and after a posture.
One should be able to move to another posture with ease.
– TKV Desikachar England 1980

“Sthira is the absence of Rajas.”
– TKV Desikachar on Yoga Sūtra Chapter Two verse 46

“Āsana, according to this verse, needs to correlate the
two qualities of steady attentiveness and spacious clarity.
However, we are being offered qualities that are actually
the fruits or outcome of the practice guidelines in the next verse.
Hence this verse is a definition, but one that arises as an outcome
of an attitude around the way we go about exploring Āsana.
Although it could be added that this definition also relates
to the direction of one’s Āsana practice as a whole.”
– Paul Harvey on Yoga Sūtra Chapter Two verse 46

“The experience known as Sthira Sukham Āsanam,
described in Yoga Sūtra Chapter Two verse 46,
arises as a fruit of Yoga Sūtra Chapter Two verse 47,
from melding the mastery of outer stillness in the world,
described as Prayatna Śaithilya, or relaxation of continued effort,
with the mystery of inner openness to the beyond,
described as Ananta Samāpatti, or unity in the infinite.”
– Paul Harvey on Yoga Sūtra Chapter Two verse 46

“Without Āsana,
Prāṇāyāma cannot become accomplished.
Without containing Prāna,
the mind cannot achieve steadiness.”
– From T Krishnamacharya’s composition,
The Yoga Rahasya Chapter One verse 45

Links to Related Posts:

• Question to Krishnamacharya – “Can you explain the concept of Vinyāsa and Pratikriyā Āsana?”
• The Viniyoga of Āsana Part 1 of 15 – Āsana according to Haṭha and Rāja
• The Viniyoga of Āsana Part 7 of 15 – Different Types of Postural Activity in Āsana Practice