A kind of Prāṇa (vital energy),
which is responsible for supplying energy for the bodily activities.
kāyavargaṇāvaṣṭambhajanitātmapradeśapracaśaktiḥ kāyabalaprāṇaḥ.
(GojīPra 129)
dehodaye śarīranāmakarmodaye sati kāyaceṣṭājananasaktirūpaḥ kāyabalaprāṇaḥ.
(GojīPra 131)