Yoga is Sanskrit for Yuj - meaning union with God and there are many forms. Look into it if you care to.
The Root of Yoga comes out of Hinduism and is ultimately evil!
Sanskrit, literally, yoking, from yunakti he yokes; akin to Latin jungere to join — more at yoke
Yoga does much the same as “fasting” as a spiritual cleansing exercise. It serves to stimulate our unresolved issues in our souls and to bring them into conscious awareness for resolution. The relaxation of the muscles, caused by the stretching exercises, decreases our physiological and psychological defense mechanisms.
Fasting works in a similar manner in that it decreases serotonin produced in the enterochromaffin cells and thus decreases the amount available to block cell signaling in the synaptic cleft, which allows unresolved emotional issues to surface.