A quick, straight punch thrown with the lead hand from the guard position. The jab is accompanied by a small, clockwise rotation of the torso and hips, while the fist rotates 90 degrees, becoming horizontal upon impact. As the punch reaches full extension, the lead shoulder is brought up to guard the chin. The rear hand remains next to the face to guard the jaw. After making contact with the target, the lead hand is retracted quickly to resume a guard position in front of the face. The jab is the most important punch in a boxer's arsenal because it provides a fair amount of its own cover and it leaves the least amount of space for a counter?punch from the opponent. It has the longest reach of any punch and does not require commitment or large weight transfers. Due to its relatively weak power, the jab is often used as a tool to gauge distances, probe an opponent's defenses, and set up heavier, more powerful punches. A half?step may be added, moving the entire body into the punch, for additional power. Despite its lack of power, the jab is the most important punch in boxing, usable not only for attack but also defense, as a good quick, stiff jab can interrupt a much more powerful punch, such as a hook or uppercut.