I would agree that most people are not so hard-core with yoga that they would attempt the “kundalini awakening,” but it does happen and people have been harmed by it.
I personally think Yoga looks really cool and relaxing, and left to my own devices would be “all up init” as my teenaged students would say.
But, I choose, out of love for God, to mortify that curiosity and not participate since it is based on Hindu worship. It is a small sacrifice I make to avoid even the appearance of breaking the first commandment. But what y’all do is your own business, since the best I can tell from the Vatican documents, you can do it if you avoid the eastern meditation part.
To me, though, separating the physical part from the eastern meditation is like trying to drink wine and avoid the alcohol. Yoga focuses so much on breathing and focusing on the body, and those very techniques are meant to bring about an altered state of consciousness.
As one Hindu writer says in the Hinduism Today article, “Yoga Renamed is Still Hindu,” (an article criticizing westerners for trying to Christianize yoga): “Hindus know where yoga came from and where it goes.”