Unlike the other punches, the hook is a bent-arm punch. The power of this punch is generated by a move known as a body whirl. In order to perfect this punch, try to master each movement one step at a time before going on to the next step.
Step 1: The Body Whirl
Stand with your feet shoulder-width apart. Your weight should be equally distributed between your feet. Bring your fists together and hold them against your chest (with palms facing your chest).
Shift your weight to your right leg while simultaneously rotating your body to the right. Pivot on the ball of your left foot so that your toes end up pointing toward your right foot. You will notice that this movement causes your arms to move along with it. Stop rotating when your elbow reaches about the midpoint in front of you.
Try this move again with a slight variation. Shift your weight to the right foot. Pivot on the ball of you left foot until your toes point toward your right foot. Immediately, snap your left arm up into a ninety-degree angle. Your left fist should stop at a midpoint in front of you.
This is called a lateral punch. The power of the hook comes from the momentum of your body rotating and the resistance of your foot pushing off of the floor. At this point, the left side of your torso should be in line with the direction of your punch.
Return your left foot back to its original position and bring your left fist back to its cheek level position.
Some things to remember:
The Right hook and left hook are virtually the same. The only difference is that you rotate your body in opposite directions.