Thanks Joe for another good and informative article. My experience echoes yours — I’ve found several partners who become almost “addicted” to double (and triple) penetration after discovering how intense and multi-orgasmic it is for them. That said, I’ve seen some disasters and all of my experiences have been with slender fit people who have good muscle tone and cardiovascular capacity. Like any other strenuous activity that requires stamina and flexibility it’s not a good idea to jump right in if you’re not really physically capable, any more than one should play a two-hour game of squash or run a marathon without any prior preparation.

Anyone who enjoys my articles here on Medium may be interested in my books Why Democracy Failed and The Praying Ape, both available from Amazon.