I think the qi is focusing itself, because you hit your hands constantly, so it has to go there...
also your attention has to go there, because you feel the hits on your skin. And then...with
time...your body knows how to do it. Thats my theory...
I´m just remembering a good exercise in Bruce Lee´s 1 and 3 Inch Power Punch book, the
Letting Down Exercise, where you relax the whole body, start floating in the universe, and
then manage to anchor this state with a codeword. I used it just for relaxation, and it worked
good for me. I think this one could possibly be helpful in conjuction with iron palm.