In Zen Buddhism, Zazen (literally "seated meditation"; Japanese: 坐禅; simplified Chinese: 坐禅) is practiced to calm the body and the mind, and foster the concentration to discover the nature of existence and thereby gain enlightenment.
The meditation is considered the heart of Zen Buddhist practice. The aim of zazen is just sitting, that is letting words, ideas, images and thoughts pass by without getting involved in them. All notion of judgment is suspended.
It is important to practice meditation every day... If there is an interval of only a few days between our practice, we lose our simple state of balance because of the hectic and stressful nature of modern life.