That's Dr. Fishmanis video. I was doing it for a while, but Algaecal posted onevideo for each variation, which I find easier to follow. And Dr. Fishman has a video on their site talking about yoga practice. I doubt he'd do that if he has problems with twhat they've done.

Here's the link. I hope it works:
https://blog.algaecal.com/yoga-for-osteoporosis/