Infections and diseases which might be shared during sexual activity — corresponding to HIV, gonorrhea, chlamydia, and herpes — could be shared via anal intercourse. Oral or vaginal intercourse could also be necessary to achieve climax. Reduce your threat of chopping or scratching your associate by trimming your nails. Long nails may tear the skinny, delicate tissue of the anus, which might lead to bleeding. It also will increase the chance of spreading bacteria that would cause infections. Be certain to clean your arms nicely and scrub beneath your nails after anal intercourse, too, particularly earlier than inserting them into the vagina or mouth. According to the Centers for Disease Control , anal sex is primarily rising in reputation with couples underneath age forty five.