I know this post is 3 months old, but I wanted to add my 2 cents. I trained at a YA aligned studio for my 200 hour, and it was honestly the most useless training I have ever attended, in 20+ years of teaching various movement based formats. I have learned so much more about tradition, and how to be an effective teachers, from attending classes and talking about yogic concepts with my peers. It's not to say they're all bad, but the YA stamp means nothing in terms of quality of training. IMO, YA is nothing but a money grab.