The basis of this is a reasonably deep knowledge of the human body and how to use it to make (somebody else's!) body behave in a desired manner.
I think my old girlfriend used to study that
Forget your students freezing, wait until you have a first time jumper halfway out of the door freeze up on you
or worse still reach out and grab something to hang on to...and it's the yoke
At least you have a little more time to work on him (well in the first case at least) you just seem to spend it hoping that his rig stays packed.
