I had a yoga instructor that I otherwise liked who insisted on doing inversions at the end of every class. I can do and don't mind headstand, but I can't do forearm stands because of a funky elbow and handstands are okay but a little scary. Anyway, the thought of doing them each class just put me in a foul mood (which is very unyogalike) so I stopped going to her. I need to get back to my practice though.

I've done inversions while on my period, FWIW. My flow is pretty light so the thought of it goind the wrong way for all of a minute or two doesn't really bother me.