When an asana is done correctly the body movements are smooth, there is lightness in the body and freedom in the mind.
B.K.S. IyengarThere is no difference in our souls...That is what yoga teaches. When you and I meet together, we forget ourselves -- our cultures and classes. There are no divisions, and we talk mind to mind, soul to soul. We are no different in our deepest needs. We are all humans.
B.K.S. IyengarThe practice of yogasana for the sake of health, to keep fit, or to maintain flexibility is the external practice of yoga. While this is a legitimate place to begin, it is not the end. Even in simple asanas, one is experiencing the three levels of quest: the external quest, which brings firmness of the body; the internal quest, which brings steadiness of intelligence; and the innermost quest, which brings benevolence of spirit.
B.K.S. Iyengar