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A. Hands Parts (Sang Bansin) The hand created so many types of tools that special care should be paid to the selection of the appropriate tool for the appropriate target. Forefist (Ap Joomuk) The forefist is generally used for attacking the philtrum, ribs solar plexus, chest, abdomen, jaw, etc. The main knuckles of the forefinger and middle finger are the punching parts. The top and front of the fist should form a right angle so the punching parts can be closely contacted with the target. Under no circumstances should the wrist be bent. The forefist is occasionally used for a pressing block. |
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How to make a Clenched Fist (Jwinun Bup) If the fist is not made firmly and correctly and there is even the minutest amount of air space, the fist will be as weak as untempered steel and soft as cotton. The fist MUST be tightly clenched at the moment of impact. | |
| 1. Open the hand naturally. |  |
| 2. Roll the Fingers Tightly. |  |
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3. Press the fingers into the palm, starting with the little finger, at the same time bending the thumb toward the inside. |
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4. Place the thumb on the forefinger and the middle finger pressing the forefinger properly. |
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2 Incorrect methods of clenching a fist: 1. The thumb is firmly placed on the middle finger. This method will weaken the side fist and place unnecessary strain on the shoulder and arm. |
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2. The thumb is placed on the extended forefinger. This will weaken the forefinger joint and is somewhat unnatural allowing air space within the fist. The back of the hand is normally faced upward at the moment of impact but occasionally is faces downward or outward. |
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| The reasons for not bending the wrist are: 1. To prevent the wrist from being blocked or grabbed by the opponent. 2. To align the punching part of the fist exactly on target. 3. To concentrate maximum force on the punching part. Incorrect  | |
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Correct
Incorrect Punching Part |
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  Correct Punching Part  |
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