Hopefully, it's clear enough to see the only point of contact with his forehead is my middle knuckle. It was even larger when I regularly worked out on a makiwara.
Just FYI: The punch needs to be aligned vertically and horizontally so the middle knuckle and bones of the hand line up with the supporting bones of the lower and upper arm. One way to check your fist is to have someone hit your fist hard with the palm of their hand. When hit you should feel a jarring of the shoulder. If you don't feel it transmitted along the bones to the shoulder, the knuckle and wrist aren't lined up properly. I had to stand upright so they could get the shot and, as I was punching down, my wrist is slightly bent downwards. I would normally be in a stance, which would have allowed the punch to travel straight to his head. And I'd make sure the back of the hand and forearm are dead straight, like a board.
Just FYI: The punch needs to be aligned vertically and horizontally so the middle knuckle and bones of the hand line up with the supporting bones of the lower and upper arm. One way to check your fist is to have someone hit your fist hard with the palm of their hand. When hit you should feel a jarring of the shoulder. If you don't feel it transmitted along the bones to the shoulder, the knuckle and wrist aren't lined up properly. I had to stand upright so they could get the shot and, as I was punching down, my wrist is slightly bent downwards. I would normally be in a stance, which would have allowed the punch to travel straight to his head. And I'd make sure the back of the hand and forearm are dead straight, like a board.
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