Very interesting post MirandaPacifica. Yes, this is typical for women....I would consider it part of the arousal, pre-orgasm process. I read once that a sex expert recommended that women try to lessen the muscle tightening in order to prolong the orgasm. Easier said than done, I imagine. It never occurred to me to ask if the same occurs for men. I'll ask my partner. Curious. Thank you for sharing!