Zazen is at the heart of Zen Buddhist practice. The aim of zazen is just sitting, opening the hand of thought. This is done either through koans, Rinzai's primary method, or whole-hearted sitting (shikantaza), the Soto sect's method. (Rinzai and Soto are the main extant Zen schools in Japan). Once the mind is able to be unhindered by its many layers, one will then be able to realize one's true Buddha nature. In Zen Buddhism, zazen (literally "seated meditation") is a meditative discipline practitioners perform to calm the body and the mind and experience insight into the nature of existence and thereby gain enlightenment (satori). The posture of zazen is seated, with folded legs and hands, and an erect but settled spine. The legs are folded in one of the standard sitting styles. The hands are folded together into a simple mudra over the belly. In many practices, one breathes from the hara (the center of gravity in the belly) and the eyelids are half-lowered, the eyes being neither fully open nor shut so that the practitioner is not distracted by outside objects but at the same time is kept awake.
Zazen Buton, all you need.
• The word “futon” becomes “buton” in word combinations in which “futon” is the second word.