I think everyone has gone off to the level 4 class.
From my understanding of blockages being released once they leave the body there is nothing for them to "hang onto" and they release or evaporate. In some of the practices of Qigong they exercise the body energy and extend it outside of the body, sometimes into deep space. This has the effect of purifying the energy and cleaning it. Because the blockages cannot stay attached to pure energy.The clean energy is not let go of but returned back into the body.
Your nervous system becomes stronger and cleaner with practice and will throw off blockages automatically. Usually I find before a big blockage lets go my emotions run high trying to defend itself, then it lets go and there is a moment of peaceful bliss.
I have not had recurring emotions after the blockages have let go. There are references to this in several Qigong books, once it goes it is gone forever.
You could possibly pick it back up again because of a Belief system you have but the SFQ training helps with this to develope a belief system that "All Blockages are gone, you are completely healed". To develope this right way of thinking prevents it from occuring again. As your faith in the training grows so do many benefits surface.
I hope this helps answer your question.
Jeff
