KNOCKOUT
He pushed off and came up to the bag.
"Okay, so first, when you were hitting it, you need to turn your shoulders just a little bit more to put more power behind the punch. That way when you swing, not only do you swing with your muscles in your arm, but you swing with the muscles in your upper body. Like this." He landed a hard punch on the bag and made a loud noise. "And don't lock your hips. It needs to be a full follow-through. You punch, and you should twist on the ball of your back foot toward your strike. Your hips and torso twist with you for a full but controlled movement."
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