I
...Or as my late Sifu used to say "It puts the energy in".
Good Lord yes, especially if you hit them on the ear! :uhyeah:
Now regarding
iron palm, I did a bit of training a long time ago ...around 1979 (?). If I remember correctly, we kept the palm very relaxed and soft, and let it drop heavily onto the bag, letting gravity do the work. There were a series of hand positions trained. I believe we trained two versions of the palm-strike:
slapping with the whole hand, including the fingers, and
stamping which focused force on the palm heel, but significantly without tensing the hand.
Anyway, after changing WC lineages to train with my old Chinese sifu, I gave up iron palm at his advice. As he put it, what was necessary in that training was already in WC, and what wasn't in WC, wasn't necessary. So please do not go by my advice. IMO, if you choose to do iron palm training, it should be done under the supervision of a reputable sifu, and you should be directing your questions to him.