Yoga means when one becomes perfect in yoga, he gets many siddhis. They are called aṣṭa-siddhi, eight kind of siddhi. Aṇimā, laghimā, prāpti-siddhi, like that, so many. Īśitva, vaśitva. So a yogī, aṇimā, he can become the smaller than the smallest. We are already smaller than the smallest, because our real dimension, spiritual dimension, is one ten-thousandth part of the tip of the hair. This is our dimension. This is only outward covering, this body. Keśāgra-śata-bhāgasya śatadhā kalpitasya ca (CC Madhya 19.140). So a yogī can give up this body and come to his original, spiritual body, and it is so small that you can . . . cannot keep yogī in prison, anywhere. Because there is some hole, he'll get out. This is yogī. This is mystic power.
What do they know about mystic power? They simply press the nose, that's all. (laughter) This kind of yoga . . . of course, these are preliminary processes, dhyāna, dhāraṇā, prāṇāyāma. This prāṇāyāma requires to get the breathing from the opposite side. We have got experience. The two holes of the nostril, one is blocked, one is open. So prāṇāyāma means to try to open the blocked side. That is called . . . (indistinct) . . . therefore. So there are so many processes. But ultimate yoga means to get this power. That is yoga. So all these powers, they are simply fragmental. The yogīs, they can attain. Although they can become, they are already smaller than the smallest.