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. IyengarHatha Yoga teaches us to use the body as the bow, asana as the arrow, and the soul the target.
B.K.S. IyengarI think overall the majority of people who are practicing it as a subject are following the right line. For the aberration, don't blame yoga or the whole community of yogis
B.K.S. Iyengar