If one swerves from the right path at an advanced stage of Yoga, he will be born in a family of wise Yogins who practise Yoga and are themselves capable of teaching Yoga. Thus, these two types of birth—one in the family of those who are fit to practise Yoga and the other in that of accomplished Yogins—are hardly met with among common people in this world. But Yoga is of such great potentiality that even this rare blessing is achieved through it.