Just to toss this in..... back in the 90's there were a number of people who were studying "secret qigongs" from anyone who they could convince to take their money. One of the common phrases I'd hear and see on internet forums was something like "I can feel my body changing". Be careful when you get into the "transform your body" stuff.... it could just be the onset of puberty.
Yeah but I write-off the normal shit talkers that have convinced themselves that all it takes is a seminar to incorporate "this stuff" . . .
As for puberty - anyone believing IS will make THAT happen . . should buy a bridge from me . .