While most of us are sure that we like to have sex, most of us also haven't spent much time thinking about what happens physiologically while we are engaged.
The beginnings of sexual arousal in a woman's body is physiological responses and the woman's subjective.
Arch Sex Behav. 2002 Oct;31(5):405-11. The physiology of sexual arousal in the human female: a recreational and procreational synthesis. Levin RJ(1).