I tried it years ago and it just made me light-headed. Recently I tried it again with different results: there is a beautiful inner brightness and purification. What an excellent bridge from SBP into DM.
Thanks Yogani!
Bewell
PS. I see that yoni mudra kumbhaka came up once in the past on the form, with Yogani offering wisdom on how to know whether it is timely to give it a try: http://www.aypsite.org/forum/topic....TOPIC_ID=614