Cuiboiboi also stated: This technique takes physical sensations as meditation objects. We start from the top of the head (around a 2-in diameter circle), notice any sensations there; then we move attention down the body, in a certain order, part by part (each part around 2,3 inches).
When we notice a sensation in a part, we move on to the next part, and see what sensations manifest in this next part. On and on through the body, round after round.
The point is not to get “stuck” in a particular part of the body, not to linger there, even if it’s a pain. The next time around to that part, that pain may have changed in nature to something else.
When attention is moved in a sweeping manner from one part of the body to the next, can the mind really stay on one particular spot, on one particular sensation long enough to observe its arising, unexpected change and passing away? It seems to me that attention would be scattered in this way, and there would be no opportunity to observe a particular sensation continuously, before moving on to observe yet another sensation.