Individual differences account for the fact that birth- and age-related looseness happens to some women and not others.
The anal sphincters are usually tighter than the pelvic muscles of the vagina, which can enhance the sexual pleasure for the inserting male during male-to-female anal intercourse because of the pressure applied to the penis.
Because most research on anal intercourse addresses men who have sex with menlittle data exists on the prevalence of anal intercourse among heterosexual couples.
Pull the corners of your mouth out toward your ears then let go.
Harvard University Press.
Sphincters upper lower glands.
Retrieved October 8,
Retrieved December 10,
Diversity, Gender, and Sexuality in Nature and People.
Because the thing is people, after opening up for sex, your vagina goes back.