Christian yoga?

Noetic prayer must, however, take place within the climate of the Orthodox Tradition and in the framework of the asceticism of the Orthodox Church. I say this because some people are cutting noetic prayer away from the whole asceticism of the Church, with the result that it is being presented as a Christian yoga. Actually when prayer is cut off from repentance and godly mourning, from the keeping of Christ's commandments, by which the tripartite soul is purified, from the sacramental life of the Church, then it loses its value from the orthodox point of view, since it is done mechanistically, exoterically, in the manner of the Buddhistic exercises.
Met. Hierotheos (Vlachos)