Cosmic Mudra Zazen means “sitting in meditation.” It is the heart of Zen practice, and is most useful if done daily. It is best learned from a teacher, who can check your posture and answer questions, but here are the basics of the practice that Dogen Zenji calls “the Dharma gate of great ease and joy.”

Zazen is traditionally done sitting on the floor on a zafu (cushion) and zabuton (mat), but can be done on a chair or any firm seat.
  
If using a zafu and zabuton, sit on the edge of the za...