What is NIA ADVERTISEMENT 747 viewsJuly 22, 2018 0 Cookie July 22, 2018 0 Comments It is a class….I am double certified in Pilates and Yoga but have not heard the term 6 Answers ActiveVotedNewestOldest 0 Harris12 Posted 0 Comments . You are viewing 1 out of 6 answers, click here to view all answers. Register or Login