Sex with a partner is 400% better

All lovers feel that sexual intercourse with orgasm is better, more satisfying than an orgasm from masturbation alone. But how much better ?

In biology terms, following orgasm, our body releases a hormone called prolactin, which make us feel satiated. In a recent study, (Biological Psychology, vol 71, p312), scientists shown that after orgasm from sexual intercourse, the increase in blood prolactin level is 400% higher in both men and women, when compared with after orgasm from masturbation.