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Sex sexual intercourse

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Sexual intercourse , also called coitus or copulation , reproductive act in which the male reproductive organ in humans and other higher animals enters the female reproductive tract. In some vertebrates, such as fish , eggs are laid outside of the body and fertilized externally. To accomplish internal copulation, certain body and organic adaptations are necessary. In the human male, the penis serves both excretory and reproductive functions. During intercourse, the blood flow is temporarily increased and trapped in the penis so that it becomes enlarged and elevated, a condition known as erection. Erection changes the normally soft and flaccid organ to one of greater size and rigidity to permit easier penetration into the reproductive tract of the female.
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Sexual intercourse

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Tips for Vaginal Intercourse - Options for Sexual Health

Sex can mean different things to different people. Things like kissing, touching, rubbing and stroking are all things that can make you feel good. Knowing about all of the options can help you make informed choices that are best for you. GTF Sex.
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Is sex painful the first time?

Metrics details. Despite abundant theoretical evidence of higher rates of suicide among lesbian, gay, and bisexual LGB youths, little is known about the relationship between suicide and types of sexual intercourse experience in youths. This study examines the association between the type of intercourse experience and suicide risk outcomes SROs: suicidal ideation, plans for suicide, suicidal attempts from the Korea Youth Risk Behavior Web-based Survey. We analyzed cross-sectional data from , students aged 12—17 years for the years and We defined lesbian, gay, or bisexual youth as youths who engaged in a type of sexual intercourse same-sex or both-sex intercourse.
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Back to Sexual health. When a woman has vaginal sex for the first time, it can be a little painful. You may also have some bleeding, but this isn't always the case. If bleeding happens, it's usually because your hymen has been broken during sexual intercourse.
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