What is the best technique in shot put?

The heavy metal ball (shot) is cradled in one hand against the side of the neck. The thrower assumes a semi-crouch, then turns or spins to gain momentum. At the proper point, he uncrouches to full height, pushing the shot forward with the entire body as the arm extends straight from the shoulder, to thrust it outward and upward. This "explosion" of bodily motion imparts the necessary velocity to the shot.