84 classic yoga asanas were taught by Lord Shiva, 
some of which are known and have endured to the present day, although the names of all the 84 are not available.
Many classic yoga texts mention 84 classic yoga asanas taught by Lord Shiva, who forms the divine Hindu trinity (along with the gods Brahma and Vishnu).
Later yoga texts however, do mention the 84 Classic Asanas and associate them with Shiva.
The Goraksha Samhita, or Goraksha Paddhathi is considered the oldest extant Hatha Yogic text, and describes the origin of the 84 classic asanas.Observing that there are as many postures as there are beings, and that there are 840000 species in all, the text states that Lord Shiva
fashioned an asana for each 100000, thus giving us 84 in all, although it mentions and describes only two in detail: the Siddhasana and the Padmasana.Read More :- 84 Classic Yoga Asanas
