Yoga has its long history not only worldwide but at C.I.
Some scholars say it could be traced its beginnings back to Stone Age Shamanism. Back then there seemed to be similarity between Yoga and Shamanism in light of both being focused on improving human conditions.
At C.I. so far as I know right now, the present Yoga teacher, Mikiyoshi Moriyama, who by the way hosts kutsurogi koubou, which helps people pursue a nature-oriented way of life. Mr. Moriyama has been a Yoga teacher for almost more than 15 years, and also been teaching Yoga at C.I. for more than 5 years. Check out the sites below for further info on the history of Yoga and Yoga at C.I.
history of Yoga-http://www.abc-of-yoga.com/beginnersguide/yogahistory.asp
Yoga at C.I.-http://www.ci-kyokai.jp/ygasana.html