While doing the postures, your mind should be in half-consciousn ess, which does not mean sleep. It means silence, emptiness, space, which can then be filled with an acute awareness of the sensations given by the posture. You watch yourself from inside. It is a full silence.
B.K.S. IyengarPractice doing yoga with an innocent mind. Then, you will be able to cognize the things happening in your body
B.K.S. IyengarBackbends are to be felt more than expressed. The other postures can be expressed and then felt. Like in meditation each person has to feel backbends.
B.K.S. IyengarWe can wash the skin of our bodies with a bath, but through asana practice we not only purify our blood and cells, we are cleansing the inner body as we practice.
B.K.S. Iyengar