Snake yoga?

[beckeremmie]

I have a young Brazilian Rainbow Boa who seems to be very healthy (eats well, very good temperment, active, etc). In the past couple days, I've noticed that sometimes she twists on her back a little bit. I recently read a post where the person referred snake yoga and said that it wasn't really anything to be concerned about. She has no indication of any health issues, but I thought it was rather odd. Is this something I should be concerned with?