system of Yoga put forward by Patanjali only eight kinds of practices have been in-
cluded and hence it is called Astanga-Yoga, i.e. Yoga with eight component parts. But
there are other systems of Yoga prevalent in the East and each has its own particular
technique. Many practices are common but there are some which are peculiar to each
system. Patanjali has included in his system practically all those which are essential or
important. The Yogi can adopt any of these according to his needs or temperament
though he is generally advised to confine himself to those practices which are pre-
scribed in the particular school to which he belongs.
It need hardly be pointed out that Yoga is an experimental science and as in all
sciences new techniques are being constantly discovered by individual teachers and
taught to their disciples. Thus each advanced teacher, though he follows the broad
principles of Yoga and techniques of his particular school, imparts a personal touch to
his teachings by introducing certain minor practices of his own. These are generally
continued in a more or less modified form as long as the school lasts. But in most
cases such schools quickly degenerate into mere academic bodies carrying on a dead
tradition.
that indeed (for) long time (with) uninterrupted con-tinuance (incessantly) (and) reverent devotion; earnestness pursued;
practised; followed; continued firm ground.
- It (Abhyasa) becomes firmly grounded on being continued for a long
time, without interruption and with reverent devotion.
In order that the practice of Yoga may bear fruit and may enable the Sadhaka to
be firmly established on the path there are three conditions which must be fulfilled.
These conditions1 as defined in this Sutra are (1) These practices must be continued
for a long time. (2) There should be no interruptions. (3) The path must be trodden
with devotion and in a spirit of reverence. The necessity for pointing out these condi-
tions will be seen if one takes into account the enormous number of failures on this