Part of the insight body is to have a relatively quiet and focused mind, settled here in the present moment, that observes the changing nature of the body. At some point we realize, as we sit down and relax, that, in fact, all of our so-called experiences of the body, all the ways in which we can know and feel the body directly, are constantly shifting and changing. It is a kaleidoscope. It is a constant flow. It is a stream of sensations, a stream of experience, that is shifting, changing, and moving.