This practice when stripped of all it's Western flourishes such as music, essential oils and eye pillows is all about solitude. The ability to go inwards and see what lies on the periphery of our consciousness. GAH! Why would anyone ever want to do that? Because when we do, we see how much of our choices are driven by fear. How much of our lives we play it safe and cling to the illusion of security. To go into the psyche and slay our dragons (small self) allows us to emerge more clear, more present, more driven by passion.