The International Association of Yoga Science Centres (I.A.Y.S.C.) coordinates the activities of the Yoga Science Centres that follow the methodology of the Yoga Teacher Pavlos K. Hassanagas. It was founded in 1984. The headquarters are in Athens, Greece and the branches are in different European countries. The I.A.Y.S.C. undertakes different projects and carries out various researches. The I.A.Y.S.C. is a member of the World Federation of Holistic Health Sciences (W.F.H.H.S.).