Yogi Thirumoolar is a Tamil yogi who is one the main 63 Nayanars and one of the 18 Siddhars. Thirumoolar has authored this seminal yogic text called Thirumandiram which consists of over 3000 verses, and it forms a part of the key text of the Tamil Shaiva Siddhanta. This is considered one of the best and most important scriptures in Tamil language . Thirumandiram is comprised of nine Tantras. The nine Tantras consist of various aspects of human life. Thirumandiram is comprised of nine Tantras. The nine Tantras consist of various aspects of human life. Tantra three explains in great details about Ashtanga Yoga, the eight limbs of yoga path. No other yogic literature or yogis has explained so much detail about the therapeutic effects of the yoga practice. Sage Thirumoolar explains yoga and sex under the name of pariyanga yoga- the yogic practices for men and women to enjoy their sexual life, tridhosa and its imbalance and how to balance the tridhosa in our body.