Doggy style is also an easy position. This is a viral infection that can cause jaundice and although not usually life-threatening, sufferers can feel extremely ill and take a long time to recover. However, the size of a clenched fist is so much greater than that of the penis that there's an increased risk of anal injury. It is believed that up to 90 per cent of gay men and 10 per cent of sexually active women engage in it, and according to one estimate, about a third of heterosexual couples have tried it from time to time. In receptive anal sex, or bottoming, HIV is 13 times more likely to infect the bottom partner than the insertive partner.
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APA Nall, R. Use protection no matter what, says Dr. English All Products: Streicher, who is the author of Sex Rx. New WHO prevention guidelines evaluate 12 risk factors. Hannah Smothers Hannah writes about health, sex, and relationships for Cosmopolitan, and you can follow her on Twitter and Instagram. Menu Close menu.