It is easy enough to feel, while sitting still, the underlying vibration of the body. At the same time, because this vibration is so familiar to us, we may not be inclined to explore deeper into the subtlety that is just below the surface…because of the mind’s natural inclination to remain in the default habitual patterns of what it has grown used to.
The mind is easily hemmed in by the day-to-day, familiar patterns and so it may put up resistance to, or not consider the possibilities of exploring the subtle sensations that can be apprehended as delicate waves and eddies of fine vibrations…like a deep underground hum.
Feel deeply into the core of the overall sensation felt in the body. Breathe into it, observe, be with that very fine, subtle “humming” sensation. You may find that the body naturally adjusts in fine micromovements as a way for it to accommodate the flow of what moves through…and what moves through is felt as a coiling, pulsating radiation, so very subtle and sometimes “thread-like.”
What is meant here is that when connecting, feeling into subtle sensations, the body has a way of “squeezing” the energy, whether in the spine or elsewhere. This squeezing, combined with the feelings of coiling energies creates the experience of exquisitely fine/thin strands of energies that feel “thread-like”…and like a fly-fisherman/woman casting his/her lines out into the lake/river, these vibratory strands can be cast far out into the wide energetic space surrounding the body!