Physical activity of Jīva (soul)- One of the threefold Yoga (2) (activity);
physical power and activity of Jīva, accruing from the assistance of the material aggregates, belonging to the Śarīra Vargaṇā (class of material clusters qua body).
kāyaḥ śarīraṃ......tadyogājjīvasya vīryapariṇāmah- śaktiḥ- sāmarthyaṃ kāyayogaḥ.
(TaBhā 6.1 Vṛ)