So what is “real” yoga anyway?

While not frequent, some of my fellow certified LYT yoga teachers have been told by students, other teachers and studio owners that LYT is not “real” yoga. Though I have been told that the method of asana I teach is “different” than what students might have previously experienced, after they experience the strength, integration and education that comes from a LYT class many are eager to continue this practice. It’s in the back of my head though that at some point someone could tell me what I’m doing is not “real”…. so it made me wonder, what the heck is “real” yoga anyway? What needs to be included in order for our practice to be “real”?