"All the various Yogas have had their place in the unfoldment of the human being. In the first purely physical race, which is called the Lemurian, the Yoga at that time imposed upon infant humanity was Hatha Yoga, the Yoga of the physical body, that Yoga which brings into conscious use and manipulation the various organs, muscles and parts of the physical frame. The problem before the adepts of that time was to teach human beings, who were then little more than animals, the purpose, significance and use of their various organs, so that they could consciously control them..."
January 1, 1970
https://en.wikiquote.org/wiki/Yoga_Sutras_of_Patanjali