In layman's term, Zen meditation is letting go of pessimistic thoughts and simply relaxing. In Buddhism, it is a contemplative discipline performed to achieve calmness in the mind and body. Most importantly, it aims for a practitioner to understand the nature of life to obtain enlightenment. To fully experience positive results of Zen meditation, there are three general methods to consider such as Concentration; Koan Introspection; and Shikantaza.
This is a 65 minute dancing meditation in three stages, with specifically created music. Disappearing in the dance then relaxing into silence and stillness is the route inside for this method. "Forget the dancer, the center of the ego; become the dance. That is the meditation.