A jab is one of the four main punches used in boxing, the three others being the uppercut, the hook and the cross. When you are in a boxer's stance you have one foot and fist out in front of you and a fist and foot behind you. When you punch straight with your lead fist you do a lead right or lead left when you use the hand in back you turn your core muscles and punch straight that is called a straight right or a straight left, but it is often called a cross. Out of all four, the jab is perhaps the most popularly known one, because the word is often used in talk unrelated to boxing. Many also consider the jab to be the most important punch in boxing, as well. It is rarely the strongest punch in a fighter's arsenal. The Compubox computerized punch scoring system divides punches between jabs and power punches. Jabs are straight, arm-length punches thrown from the leading hand. They are used for many purposes. First, a jab can be