Yogic flying is a mental-physical technique and exercise done by practitioners of Transcendental Meditation (TM) which features the participant hopping while cross-legged. Yogic flying is part of the TM-Sidhi program created in the 1970's by TM's founder Maharishi Mahesh Yogi, who claimed that if enough people practiced yogic flying at the same time and in the same location, then benefits will emerge in the surrounding society; this was known as the "Extended Maharishi Effect". According to TM teacher-spokesperson Bob Roth, the first stage of the technique is hopping, the second stage is when the body briefly hovers, and the third stage is "mastery of the sky" where the body can fly freely in the air.