However, it is believed that female orgasm has been an adapted genetic ability that has been evolving for thousands of years, and some scientists insist that it is still evolving and thus not all women may be physically capable of orgasm. If this is true, exploring other sexually satisfying avenues may be necessary, however it doesn't mean at all that anything may be wrong with the woman. Having sexual intercourse while standing up, urinating after intercourse or jumping up and down after intercourse will prevent pregnancy. None of these activities prevent pregnancy or even increase your chances of avoiding pregnancy. Many people who are exclusively heterosexual practice oral-genital sex.
Anal sex can be another form of sexual release and enjoyment for many couples.
The bottom line is that many people are completely open with their partners, and usually they communicate well with each other and learn what they like to do with each other sexually. Sex play with friends of either gender is common during the preadolescent and early adolescent years. These experiences should not be interpreted as proof of any long-term, adult sexual orientation. Infection with HIV, the virus that causes AIDS, is increasing more rapidly among heterosexuals than among homosexuals. Many people are being infected with HIV through sexual activity with someone of the opposite sex.