Sex is Good for Health and You should the Following Foods Before Sex
Sexual intercourse
Sexual intercourse (click), or coitus or copulation, is principally the insertion and thrusting of a male's penis, usually when erect, into a female's vagina for the purposes of sexual pleasure or reproduction. This is also known as vaginal intercourse or vaginal sex.Other forms of penetrative sexual intercourse include penetration of the anus by the penis (anal sex), penetration of the mouth by the penis or oral penetration of the female genitalia (oral sex), sexual penetration by the fingers (fingering), and penetration by use of a strap-on dildo. These activities involve physical intimacy between two or more individuals and are usually used among humans solely for physical or emotional pleasure and commonly contribute to human bonding.
A variety of views concern what constitutes sexual intercourse or other sexual activity, which can also impact views on sexual health. Although the term sexual intercourse, particularly the variant coitus, generally denotes penile-vaginal penetration and the possibility of creating offspring (which is the fertilization process known as reproduction), it also commonly denotes penetrative oral sex and particularly penile-anal sex. Non-penetrative sex acts, such as non-penetrative forms of cunnilingus or mutual masturbation, have been termed outercourse, but may additionally be among the sexual acts contributing to human bonding and considered sexual intercourse. The term sex, often a shorthand forsexual intercourse, can mean any form of sexual activity. Because people can be at risk of contracting sexually transmitted infections during these activities, though the transmission risk is significantly reduced during non-penetrative sex, safe sex practices are advised.
Various jurisdictions have placed restrictive laws against certain sexual acts, such as incest, sexual activity withminors, extramarital sex, prostitution, sodomy, rape and zoophilia. Religious beliefs also play a role in personal decisions about sexual intercourse or other sexual activity, such as decisions about virginity, or legal and public policy matters. Religious views on sexuality vary significantly between different religions and sects of the same religion, though there are common themes, such as prohibition of adultery.
Reproductive sexual intercourse between non-human animals is more often termed copulation, and sperm may be introduced into the female's reproductive tract in non-vaginal ways among the animals, such as by cloacal copulation. For most non-human mammals, mating and copulation occur at the point of estrus (the most fertile period of time in the female's reproductive cycle), which increases the chances of successful impregnation. However, bonobos, dolphins and chimpanzees are known to engage in sexual intercourse regardless of whether or not the female is in estrus, and to engage in sex acts with same-sex partners. Like humans engaging in sexual activity primarily for pleasure, this behavior in the aforementioned animals is also presumed to be for pleasure, and a contributing factor to strengthening their social bonds.
Contents
Definitions
19th-century painting of a couple engaged in vaginal intercourse, byAchille Devéria
19th-century erotic interpretation ofHadrian and Antinous engaged in anal intercourse, by Édouard-Henri Avril
Behaviors termed sexual intercourse may be defined by different words, including coitus, copulation, coition or intercourse (which is typically shorthand for sexual intercourse). The term coitus is derived from theLatin word coitio or coire, meaning "a coming together or joining together" or "to go together"; it describes a variety of sexual activities under ancient Latin terms, but usually refers exclusively to penile-vaginal penetration,[25] which is often termed vaginal intercourse or vaginal sex. Vaginal sex, and less often vaginal intercourse, may also refer to any vaginal sexual activity, particularly if penetrative, including vaginal sexual activity between lesbian couples. Copulation, by contrast, most often means the mating process of non-human animals; it is generally defined as the sexually reproductive act of transferring sperm from a male to a female or sexual procreation between a man and a woman, but may also denote any sexual activity between opposite-sex or same-sex pairings.
Although use of the terms sexual intercourse and sex to denote penile-vaginal intercourse are the prevalent usages of the words in common discourse, sex and the phrase "have sex" can mean any penetrative or non-penetrative sexual activity between two or more people.The World Health Organization (WHO) states that non-English languages and cultures "use different terms for sexual activity, with slightly different meanings". Various vulgar or slang words and euphemisms are also used to describe sexual intercourse or other sexual activity, such as the term fuck and the phrase "sleep together". Penetration of the vagina by the erect penis is additionally known as intromission, or by the Latin name immissio penis (Latin for "insertion of the penis").
Commonly, researchers define sexual intercourse as penile-vaginal intercourse while using specific terms, such as anal sex or oral sex, for other sexual activities. Scholars Richard M. Lerner and Laurence Steinberg state that researchers also "rarely disclose how they define sex or even whether they resolved potential discrepancies in definitions of sex". Learner and Steinberg attribute researchers' focus on penile-vaginal sex to "the larger culture's preoccupation with this form of sexual activity," and have expressed concern that the "widespread, unquestioned equation of penile-vaginal intercourse with sex reflects a failure to examine systematically 'whether the respondent's understanding of the question [about sexual activity] matches what the researcher had in mind'". This focus also relegates other forms of mutual sexual activity to foreplay or regards them as not being "real sex" and additionally limits how rape is defined. There is also concern among scholars that conceptually conflating sexual activity with vaginal intercourse and sexual function hinders and limits information about sexual behavior that non-heterosexual people may be engaging in, or information about heterosexuals who may be engaging in non-vaginal sexual activity.
Vaginal, anal and oral sex, especially their penetrative forms, are the sexual activities most commonly recognized as sexual intercourse. Though non-penetrative and non-penile-vaginal sexual activities may be regarded as sexual intercourse, they may also be regarded as maintaining "technical virginity" or as "outercourse," regardless of any penetrative aspects; this is more often the case for oral sex than for anal sex. Virginity loss is often based on penile-vaginal intercourse partly because heterosexual couples may engage in anal or oral sex not only for sexual pleasure, but as ways of maintaining that they are virgins if they have not engaged in the reproductive act of coitus. Similarly, gay men may consider frotting or oral sex as ways of maintaining their virginities, with penile-anal penetration defined as sexual intercourse and resulting in virginity loss, while other gay men may define frotting or oral sex as their main forms of sexual intercourse. Lesbians may define oral sex or fingering as sexual intercourse and resulting in virginity loss, and may also regard tribadism as a primary form of sexual activity.
Studies regarding the definition of sexual intercourse sometimes conflict. A 1999 study by the Kinsey Institute examined the definition of sex based on a 1991 random sample of 599 college students from 29 U.S. states; it reported that while "virtually every college student they surveyed considered penile-vaginal intercourse to be sex," and 19–20% said that anal intercourse was not sex, 60% said oral-genital contact (fellatio, cunnilingus) did not constitute having sex. Similarly, a 2003 study published in the Canadian Journal of Human Sexualityfocusing on definitions of having sex and noting studies concerning university students from the United States, the United Kingdom, and Australia reported that "[w]hile the vast majority of respondents (more than 97%) in these three studies included penile-vaginal intercourse in their definition of sex, fewer (between 70% and 90%) respondents considered penile-anal intercourse to constitute having sex" and that "oral-genital behaviours were defined as sex by between 32% and 58% of respondents". The Centers for Disease Control and Prevention(CDC) stated in 2009 that "[a]lthough there are only limited national data about how often adolescents engage in oral sex, some data suggest that many adolescents who engage in oral sex do not consider it to be 'sex'; therefore they may use oral sex as an option to experience sex while still, in their minds, remaining abstinent".
The specificity of questions concerning sexual activity can additionally affect definitions of sexual intercourse or other sexual behaviors. Another study by the Kinsey Institute sampled 484 people, ranging in ages 18–96. The study reported that nearly 95% of its participants "agreed that penile-vaginal intercourse meant 'had sex.' But the numbers changed as the questions got more specific". 11% of respondents based "had sex" on whether the man had achieved an orgasm, concluding that absence of an orgasm does not constitute "having had" sex; "[a]bout 80 percent of respondents said penile-anal intercourse meant 'had sex.' About 70 percent of people believed oral sex was sex." Condom use is also a factor, with some men stating that sexual activity involving the protection of a condom is not "real sex" or "the real thing". One study reported that older generations of men (65 or older) in particular do not view sexual activity involving the protection of a condom to be sex. This view is common among men in Africa,where sexual activity involving the protection of a condom is often associated with emasculation because condoms prevent direct penile–to–skin genital contact.
Bonding and stimulus variationCopulation ranges from a purely reproductive activity to one of emotional bonding. For example, sexual intercourse and sexual activity in general often play a strong role in human bonding.[8] In many societies, it is normal for couples to have sexual intercourse while using some method of birth control (contraception), sharing pleasure and strengthening their emotional bond through sexual activity even though they are deliberately avoiding pregnancy.
In humans and bonobos, the female undergoes relatively concealed ovulation so that male and female partners commonly do not know whether she is fertile at any given moment. One possible reason for this distinct biological feature may be formation of strong emotional bonds between sexual partners important for social interactions and, in the case of humans, long-term partnership rather than immediate sexual reproduction. For humans in particular, cooperative behavior in a community and, by extension, sexual activity reinforce social bonds between individuals and may form larger social structures. The resulting cooperation encourages collective tasks that promote the survival of each member of the group.
Édouard-Henri Avril depiction of awoman on top position, a position that is more likely to stimulate the clitoris
Sexual intercourse or other sexual activity can encompass various sexually stimulating factors (physical stimulation or psychological stimulation), including different sex positions or the use of sex toys. Foreplay may precede particular sexual activities, often leading to sexual arousal of the partners and resulting in the erection of the penis or natural lubrication of the vagina It is also common for people to be as sexually satisfied by being kissed, touched erotically, or held as they are by sexual intercourse.
During coitus, the partners move their hips to move the penis backward and forward inside the vagina to cause friction, typically without fully removing the penis. In this way, they stimulate themselves and each other, often continuing until orgasm in either or both partners is achieved.
For human females, stimulation of the clitoris plays a significant role in sexual activity; 70–80% of women require direct clitoral stimulation to achieve orgasm, though indirect clitoral stimulation (for example, via vaginal intercourse) may also be sufficient (see orgasm in females). Because of this, some couples may engage in the woman on top position or the coital alignment technique, a technique combining the "riding high" variation of the missionary position with pressure-counterpressure movements performed by each partner in rhythm with sexual penetration, to maximize clitoral stimulation.
Édouard-Henri Avril depiction of cunnilingus in the life of Sappho
Anal sex involves stimulation of the anus, anal cavity, sphincter valve orrectum; it most commonly means the insertion of a man's penis into another person's rectum, but may also mean pegging, the use of other sex toys or fingers to penetrate the anus, or anilingus
Oral sex consists of all the sexual activities that involve the use of the mouth and throat to stimulate genitalia or anus. It is sometimes performed to the exclusion of all other forms of sexual activity, and may include the ingestion or absorption of semen or vaginal fluids.
Fingering (or digital penetration or digital intercourse) involves the manual manipulation of the clitoris, rest of the vulva, vagina or anus for the purpose of sexual arousal and sexual stimulation; it may constitute the entire sexual encounter or it may be part of mutual masturbation, foreplay or other sexual activities.
Sexual arousal
Sexual arousal is the feeling animals and humans get when they are ready to have sexual intercourse.
Contents
Sexual arousal in people: When people become sexually aroused, their bodies change in certain ways.
In women: In men:
Female sexual arousal. The nipples are erect. Inside her body, the uterus may have moved backwards while her vagina starts to expand.
Sexual intercourse (click), or coitus or copulation, is principally the insertion and thrusting of a male's penis, usually when erect, into a female's vagina for the purposes of sexual pleasure or reproduction. This is also known as vaginal intercourse or vaginal sex.Other forms of penetrative sexual intercourse include penetration of the anus by the penis (anal sex), penetration of the mouth by the penis or oral penetration of the female genitalia (oral sex), sexual penetration by the fingers (fingering), and penetration by use of a strap-on dildo. These activities involve physical intimacy between two or more individuals and are usually used among humans solely for physical or emotional pleasure and commonly contribute to human bonding.
A variety of views concern what constitutes sexual intercourse or other sexual activity, which can also impact views on sexual health. Although the term sexual intercourse, particularly the variant coitus, generally denotes penile-vaginal penetration and the possibility of creating offspring (which is the fertilization process known as reproduction), it also commonly denotes penetrative oral sex and particularly penile-anal sex. Non-penetrative sex acts, such as non-penetrative forms of cunnilingus or mutual masturbation, have been termed outercourse, but may additionally be among the sexual acts contributing to human bonding and considered sexual intercourse. The term sex, often a shorthand forsexual intercourse, can mean any form of sexual activity. Because people can be at risk of contracting sexually transmitted infections during these activities, though the transmission risk is significantly reduced during non-penetrative sex, safe sex practices are advised.
Various jurisdictions have placed restrictive laws against certain sexual acts, such as incest, sexual activity withminors, extramarital sex, prostitution, sodomy, rape and zoophilia. Religious beliefs also play a role in personal decisions about sexual intercourse or other sexual activity, such as decisions about virginity, or legal and public policy matters. Religious views on sexuality vary significantly between different religions and sects of the same religion, though there are common themes, such as prohibition of adultery.
Reproductive sexual intercourse between non-human animals is more often termed copulation, and sperm may be introduced into the female's reproductive tract in non-vaginal ways among the animals, such as by cloacal copulation. For most non-human mammals, mating and copulation occur at the point of estrus (the most fertile period of time in the female's reproductive cycle), which increases the chances of successful impregnation. However, bonobos, dolphins and chimpanzees are known to engage in sexual intercourse regardless of whether or not the female is in estrus, and to engage in sex acts with same-sex partners. Like humans engaging in sexual activity primarily for pleasure, this behavior in the aforementioned animals is also presumed to be for pleasure, and a contributing factor to strengthening their social bonds.
Contents
- 1 Behaviors
- 2 Health effects
- 3 Ethical, religious, and legal views
- 4 Other animals
- 5 See also
- 6 References
- 7 External links
Definitions
19th-century painting of a couple engaged in vaginal intercourse, byAchille Devéria
19th-century erotic interpretation ofHadrian and Antinous engaged in anal intercourse, by Édouard-Henri Avril
Behaviors termed sexual intercourse may be defined by different words, including coitus, copulation, coition or intercourse (which is typically shorthand for sexual intercourse). The term coitus is derived from theLatin word coitio or coire, meaning "a coming together or joining together" or "to go together"; it describes a variety of sexual activities under ancient Latin terms, but usually refers exclusively to penile-vaginal penetration,[25] which is often termed vaginal intercourse or vaginal sex. Vaginal sex, and less often vaginal intercourse, may also refer to any vaginal sexual activity, particularly if penetrative, including vaginal sexual activity between lesbian couples. Copulation, by contrast, most often means the mating process of non-human animals; it is generally defined as the sexually reproductive act of transferring sperm from a male to a female or sexual procreation between a man and a woman, but may also denote any sexual activity between opposite-sex or same-sex pairings.
Although use of the terms sexual intercourse and sex to denote penile-vaginal intercourse are the prevalent usages of the words in common discourse, sex and the phrase "have sex" can mean any penetrative or non-penetrative sexual activity between two or more people.The World Health Organization (WHO) states that non-English languages and cultures "use different terms for sexual activity, with slightly different meanings". Various vulgar or slang words and euphemisms are also used to describe sexual intercourse or other sexual activity, such as the term fuck and the phrase "sleep together". Penetration of the vagina by the erect penis is additionally known as intromission, or by the Latin name immissio penis (Latin for "insertion of the penis").
Commonly, researchers define sexual intercourse as penile-vaginal intercourse while using specific terms, such as anal sex or oral sex, for other sexual activities. Scholars Richard M. Lerner and Laurence Steinberg state that researchers also "rarely disclose how they define sex or even whether they resolved potential discrepancies in definitions of sex". Learner and Steinberg attribute researchers' focus on penile-vaginal sex to "the larger culture's preoccupation with this form of sexual activity," and have expressed concern that the "widespread, unquestioned equation of penile-vaginal intercourse with sex reflects a failure to examine systematically 'whether the respondent's understanding of the question [about sexual activity] matches what the researcher had in mind'". This focus also relegates other forms of mutual sexual activity to foreplay or regards them as not being "real sex" and additionally limits how rape is defined. There is also concern among scholars that conceptually conflating sexual activity with vaginal intercourse and sexual function hinders and limits information about sexual behavior that non-heterosexual people may be engaging in, or information about heterosexuals who may be engaging in non-vaginal sexual activity.
Vaginal, anal and oral sex, especially their penetrative forms, are the sexual activities most commonly recognized as sexual intercourse. Though non-penetrative and non-penile-vaginal sexual activities may be regarded as sexual intercourse, they may also be regarded as maintaining "technical virginity" or as "outercourse," regardless of any penetrative aspects; this is more often the case for oral sex than for anal sex. Virginity loss is often based on penile-vaginal intercourse partly because heterosexual couples may engage in anal or oral sex not only for sexual pleasure, but as ways of maintaining that they are virgins if they have not engaged in the reproductive act of coitus. Similarly, gay men may consider frotting or oral sex as ways of maintaining their virginities, with penile-anal penetration defined as sexual intercourse and resulting in virginity loss, while other gay men may define frotting or oral sex as their main forms of sexual intercourse. Lesbians may define oral sex or fingering as sexual intercourse and resulting in virginity loss, and may also regard tribadism as a primary form of sexual activity.
Studies regarding the definition of sexual intercourse sometimes conflict. A 1999 study by the Kinsey Institute examined the definition of sex based on a 1991 random sample of 599 college students from 29 U.S. states; it reported that while "virtually every college student they surveyed considered penile-vaginal intercourse to be sex," and 19–20% said that anal intercourse was not sex, 60% said oral-genital contact (fellatio, cunnilingus) did not constitute having sex. Similarly, a 2003 study published in the Canadian Journal of Human Sexualityfocusing on definitions of having sex and noting studies concerning university students from the United States, the United Kingdom, and Australia reported that "[w]hile the vast majority of respondents (more than 97%) in these three studies included penile-vaginal intercourse in their definition of sex, fewer (between 70% and 90%) respondents considered penile-anal intercourse to constitute having sex" and that "oral-genital behaviours were defined as sex by between 32% and 58% of respondents". The Centers for Disease Control and Prevention(CDC) stated in 2009 that "[a]lthough there are only limited national data about how often adolescents engage in oral sex, some data suggest that many adolescents who engage in oral sex do not consider it to be 'sex'; therefore they may use oral sex as an option to experience sex while still, in their minds, remaining abstinent".
The specificity of questions concerning sexual activity can additionally affect definitions of sexual intercourse or other sexual behaviors. Another study by the Kinsey Institute sampled 484 people, ranging in ages 18–96. The study reported that nearly 95% of its participants "agreed that penile-vaginal intercourse meant 'had sex.' But the numbers changed as the questions got more specific". 11% of respondents based "had sex" on whether the man had achieved an orgasm, concluding that absence of an orgasm does not constitute "having had" sex; "[a]bout 80 percent of respondents said penile-anal intercourse meant 'had sex.' About 70 percent of people believed oral sex was sex." Condom use is also a factor, with some men stating that sexual activity involving the protection of a condom is not "real sex" or "the real thing". One study reported that older generations of men (65 or older) in particular do not view sexual activity involving the protection of a condom to be sex. This view is common among men in Africa,where sexual activity involving the protection of a condom is often associated with emasculation because condoms prevent direct penile–to–skin genital contact.
Bonding and stimulus variationCopulation ranges from a purely reproductive activity to one of emotional bonding. For example, sexual intercourse and sexual activity in general often play a strong role in human bonding.[8] In many societies, it is normal for couples to have sexual intercourse while using some method of birth control (contraception), sharing pleasure and strengthening their emotional bond through sexual activity even though they are deliberately avoiding pregnancy.
In humans and bonobos, the female undergoes relatively concealed ovulation so that male and female partners commonly do not know whether she is fertile at any given moment. One possible reason for this distinct biological feature may be formation of strong emotional bonds between sexual partners important for social interactions and, in the case of humans, long-term partnership rather than immediate sexual reproduction. For humans in particular, cooperative behavior in a community and, by extension, sexual activity reinforce social bonds between individuals and may form larger social structures. The resulting cooperation encourages collective tasks that promote the survival of each member of the group.
Édouard-Henri Avril depiction of awoman on top position, a position that is more likely to stimulate the clitoris
Sexual intercourse or other sexual activity can encompass various sexually stimulating factors (physical stimulation or psychological stimulation), including different sex positions or the use of sex toys. Foreplay may precede particular sexual activities, often leading to sexual arousal of the partners and resulting in the erection of the penis or natural lubrication of the vagina It is also common for people to be as sexually satisfied by being kissed, touched erotically, or held as they are by sexual intercourse.
During coitus, the partners move their hips to move the penis backward and forward inside the vagina to cause friction, typically without fully removing the penis. In this way, they stimulate themselves and each other, often continuing until orgasm in either or both partners is achieved.
For human females, stimulation of the clitoris plays a significant role in sexual activity; 70–80% of women require direct clitoral stimulation to achieve orgasm, though indirect clitoral stimulation (for example, via vaginal intercourse) may also be sufficient (see orgasm in females). Because of this, some couples may engage in the woman on top position or the coital alignment technique, a technique combining the "riding high" variation of the missionary position with pressure-counterpressure movements performed by each partner in rhythm with sexual penetration, to maximize clitoral stimulation.
Édouard-Henri Avril depiction of cunnilingus in the life of Sappho
Anal sex involves stimulation of the anus, anal cavity, sphincter valve orrectum; it most commonly means the insertion of a man's penis into another person's rectum, but may also mean pegging, the use of other sex toys or fingers to penetrate the anus, or anilingus
Oral sex consists of all the sexual activities that involve the use of the mouth and throat to stimulate genitalia or anus. It is sometimes performed to the exclusion of all other forms of sexual activity, and may include the ingestion or absorption of semen or vaginal fluids.
Fingering (or digital penetration or digital intercourse) involves the manual manipulation of the clitoris, rest of the vulva, vagina or anus for the purpose of sexual arousal and sexual stimulation; it may constitute the entire sexual encounter or it may be part of mutual masturbation, foreplay or other sexual activities.
Sexual arousal
Sexual arousal is the feeling animals and humans get when they are ready to have sexual intercourse.
Contents
Sexual arousal in people: When people become sexually aroused, their bodies change in certain ways.
In women: In men:
Female sexual arousal. The nipples are erect. Inside her body, the uterus may have moved backwards while her vagina starts to expand.
- The breasts will get bigger.
- Nipples may stiffen.
- The vagina will become slippery so it is easier for the erect penis to go in.
- Blood will fill the walls of the vagina.
- The clitoris and labia will swell up.
- The cervix and uterus will pull backwards.
- The vagina will expand upwards.
- The labia majora and labia minora will become red and swollen.
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