Different Types of Postural Activity in Āsana Practice

10. Furthermore, the consideration of movement
or stasis sits within a relationship to the
deeper purpose of Āsana within our journey
through the body and the breath, to the mind
and beyond, through considerations such as:
In relation to the fluctuations of the Guṇa.
Ideally, dynamic work is a state of still movement,
rather than a state of active movement, as in Rajas.
Equally, static work is a state of bright stasis,
rather than a state of dull stasis, as in Tamas.
Thus, in relation to the Guṇa, the application
of both movement and stasis in Āsana need to be
appropriately supported by a quality of Sattva.
As in a quality of stillness within dynamic work
and a quality of brightness within static work.

Āsana Mudrā & Prāṇāyāma
– Collected Viniyoga of Practice Planning Principles

Āsana Mudrā & Prāṇāyāma
– Collected Practice Planning and Practice Theory Questions