The timing to check reference points is very important. When your skill of needling is getting stable, more careful, sensitive palpation is required. Because the body is reacting quicker than what you think. You have to correspond to the speed. There is a possibility that you might be palpating reference points which already have changed because you miss the timing little bit. It might be a reason for never-seem-to-change reference points no matter how time passes.
The body is moving at a very rapid speed. It can be said as an instant in other words. Infants who are filled with qi are the most understandable example. Exactly reference points change in an instant. How much you touch the kid later, you never be able to feel changes. It is no exaggeration to say that the most of treatments on children are over-stimulated.
Again, what is important is the timing.
*This article is translated from Japanese Shakuju association blog.