Adiyogi or the first yogi is referred to as Shiva in the popular culture
A yogi is one who has experienced the entire existence as himself. Only nothingness can hold everything. The yogi who contains everything within himself is synonymous with the basis of existence, Shiva. The science of yoga originates in Adiyogi. He brought forth the most powerful tools to raise human consciousness and explored every possible way to transform the human mechanism into its ultimate possibility.