I remember hearing about this. I think it pretained to developing a "feel", for feeling energy. Knowing that your dog has a flea problem, and addressing it with qigong,is different then ignoring that known fact, and trying to feel if your dog has any blockages, energetically. If I had hair lice, I would probably buy the appropriate shampoo and deal with it in that fashion, along with combing out the eggs, etc., as opposed to using sword fingers. I am not saying it isn't possible to have an effect, I just think you are working from the outside in, instead of the inside out.