From Psychology Today: “As women become sexually aroused, vaginal muscle tissue relaxes somewhat. Biologically, this makes perfect sense. Evolution is all about facilitating reproduction. A tight vagina would impede intercourse and reproduction, so women evolved to have sexual arousal relax the vaginal muscles, allowing easier insertion of erections–and greater chance of pregnancy. However, arousal-related vaginal loosening does NOT produce a big open cavity like the inside of a sock. Rather, the vaginal interior changes from resembling a tight fist to a fist loose enough to insert a finger or two.”
The site adds, “After relaxing during sex, vaginal muscle tissue naturally contracts—tightens—again. Intercourse does NOT permanently stretch the vagina. This process, loosening during arousal and tightening afterward, happens no matter how often the woman has sex.”
There you have it, folks. Believe what you will.
