Reiteration of the importance of prior purification. The yogi who jumps into advanced prāṇāyāma without preparing the energy channels becomes ill.

The diseases can be physical (respiratory, cardiac, nervous problems) or mental (anxiety, obsessions, instability).

Correct preparation includes ṣaṭkarma, āsana, and gentle nāḍīśodhana before intensifying the prāṇāyāma.