(Sanskrit, "the perfect pose") A seated posture for meditation or Alchemy. It is described by Swami Sivananda as follows: "Next to Padmasana comes Siddhasana in importance. Some eulogise this Asana as even superior to Padmasana for purposes of Dhyana. If you get mastery over this Asana, you will acquire many Siddhis. Further it was being practised by many Siddhas of yore. Hence the name Siddhasana. Even fatty persons with big thighs can practise this Asana easily. In fact this is better to some persons than Padmasana. Young Brahmacharins who attempt to get established in celibacy should practise this Asana. This Asana is not suitable for ladies. Place one heel at anus. Keep the other heel on the root of the generative organ. The feet or legs should be so nicely arranged that the ankle-joints should touch each other. Hands can be placed as in Padmasana."