The ultimate goal in practicing yoga is now clearly explained. Yoga practice is not meant for attaining any kind of material facility; it is to enable the cessation of all material existence. One who seeks an improvement in health or aspires after material perfection is no yogi according to Bhagavad-gita. Nor does cessation of material existence entail one's entering into "the void," which is only a myth. There is no void anywhere within the creation of the Lord.
>>> Bhagavad Gita 6.15