Swami Rama on the proper posture of sitting.

Today I am going to teach you the real practice. You will understand the value of it, provided you pay attention. As part of systematic meditation, you first learn to sit with your head, neck and trunk straight. It is the healthiest and most comfortable way of sitting. When you sit this way, the pressure at the base of the spine creates heat, and as the heat increases, the pranic forces expands and rises upwards. Because the spine is straight and the nervous system relaxed, the pranic energy flows freely upward along the spinal column toward the head. In this pose you are free from inertia and sloth. Without the proper posture you will face numberless obstacles in your meditation. And meditation is the core of all practices.