BACK FIST

This type of punch uses the back of the knuckles and is the easiest of
all to understand the whipping principle. You should turn your waist
(for a right handed punch) to the right and allow your fist to be
thrown out. Just before impact, the waist is jerked back the other
way so that the wrist is caused to whip out. You must have a totally
relaxed wrist for this to work. You close your palm lightly upon impact;
the forward motion doesn’t have to be very fast, as it is the
back- ward motion that is the main movement for this punch. Photo
No. 143. Once again we always put in a block with this same fist before
the attack. So if you were striking with the right fist, you would
block across to your left with that same fist as if you are blocking a
left handed punch.