Science tells us that owing to foreplay the hormonal photo improvements: in the situation of girls one of the most famed sex hormones are dopamine, noradrenaline and phenylethylamine (however the list is extended and a number of other hormones are essential in the course of intercourse) which cause: increased coronary heart price coronary heart, elevated physique temperature, hypersensitivity with the erogenous zones (i.e. the parts of the human body most sensitive to sexual stimulation) such as the nipples, clitoris and vagina. The latter, the vagina, under the influence of hormones stretches and starts to lubricate.
