Siddha means an adept in sanskrit. Since great adepts used this asana, it bears the name siddhasan. Siddhas (perfected yogis) speak very highly of this asana. Young celibates that those who attempt to become established in celibacy should practice this asana.

Sit and stretch the legs forward. Bend the left leg at the knee and place the heel at the soft portion of the perineum, the space between the anus and the scrotum. Then fold the right leg and place the heel against the pubic bone or just above the genitals. The genitals should be arranged in such a manner that no pressure is felt. Keep the body erect and place the hands as in padmasan.