A History of Sanskrit Literature c18.27

c18.27

The exercises of mental concentration are in the later commentaries distinguished by the name of *rāja-yoga* or "chief Yoga." The external expedients are called *kriyā-yoga*, or "practical Yoga." The more intense form of the latter, in later works called *haṭha-yoga*, or "forcible Yoga," and dealing for the most part with suppression of the breath, is very often contrasted with *rāja-yoga*.