One thing appears and reappears in this literature, and it is the rhetorical assumption that the audience believes in, and has experienced already, a very particular kind of... ineffably "psychological" change. Or at least: that the audience believes in the possibility of such a transformation.
1) Great, that sounds fun. Yoga needs an update anyway.
2) Well, that sounds fine -- but it doesn't sound like Yoga. Yoga is an ancient precise method for bringing about enlightenment and healing, and it activates the chakras in very specific ways by using techniques that have been perfected over the millenia. "Wiggle your shoulders" all you want -- that's good exercise. But it's not Yoga.
Incidentally (?): here's a picture of a pit-viper. I took this picture this weekend. I had seen a Carolina water snake about a month ago (pictured below), and I thought it was the same. It wasn't. The top one here is a copperhead -- not deadly, but painfully poisonous. The bottom one's harmless. Obviously, sometimes definitions are really important. But of course, I wouldn't have this picture if I knew my definitions. Hey, isn't a snake a classic figure for wisdom? Of course.