Blurb:

In the premodern period yoga is freedom (mokṣa) from the causal doctrine of retributive reaction (karma), the round of repeated death and birth (saṃsāra) and suffering (duḥkha). In modern contexts, yoga is presented, and experienced, as release from ill-health. Paradoxically however the opposite view is also valid: becoming liberated may entail constraining behaviours and practices.