Shiatsu, the traditional Japanese form of acupressure, can be quite vigorous, with deep pressure applied to each point for three to five seconds. Releasing these healing points opens the channels of energy and blood circulation to nourish the internal organs, glands, muscles, nerves and vital centers of the body. Shiatsu uses thumbs, fingers, palms, the side of the hand, or knuckles to apply steady, firm pressure for increasing the healing benefits.
(Source: Acupressure.com, www.acupressure.com)