Let's say a stone is lodged in a pipe which carries water. Understandably, the stone lowers the rate at which the water flows through the pipe. So, if the pipe is pinched right before the area where the stone is located and the water is allowed to build up, the potential energy of the water that is stopped from flowing, rises. When the pinch before the stone is released, the water flows faster than normal, pushing the obstruction along with it. The obstruction is then removed from the area and enables the water to resume its flow. This is exactly the way acupressure works. The theory states that obstruction in meridians cause the energy to flow slower which results in a malfunction or even dysfunction in the organ that is associated with the meridian. The pressure technique is used to remove the obstruction so that energy can flow with regularity and the organ can be made to resume its normal function.