Human sexual activity, human sexual practice or human sexual behaviour
is the manner in which humans experience and express their sexuality.
People engage in a variety of sexual acts, ranging from activities
done alone (e.g., masturbation) to acts with another person (e.g.,
sexual intercourse, non-penetrative sex, oral sex, etc.) in varying
patterns of frequency, for a wide variety of reasons. Sexual activity
usually results in sexual arousal and physiological changes in the
aroused person, some of which are pronounced while others are more
subtle. Sexual activity may also include conduct and activities which
are intended to arouse the sexual interest of another or enhance the
sex life of another, such as strategies to find or attract partners
(courtship and display behaviour), or personal interactions between
individuals (for instance, foreplay or BDSM). Sexual activity may
follow sexual arousal.
Human sexual activity
.jpg/300px-Thomas_Rowlandson_(15).jpg)
Human sexual activity has sociological, cognitive, emotional,
behavioural and biological aspects; these include personal bonding,
sharing emotions and the physiology of the reproductive system, sex
drive, sexual intercourse and sexual behaviour in all its forms.
In some cultures, sexual activity is considered acceptable only within
marriage, while premarital and extramarital sex are taboo. Some sexual
activities are illegal either universally or in some countries or
subnational jurisdictions, while some are considered contrary to the
norms of certain societies or cultures. Two examples that are criminal
offences in most jurisdictions are sexual assault and sexual activity
with a person below the local age of consent.
Contents
1 Types
2 Stages of physiological arousal during sexual stimulation
3 Psychological aspects
3.1 Motivations
3.2 Self-determination theory
4 Frequency
4.1 Adolescents
5 Health and safety
5.1 Unwanted pregnancy
5.2 Sexually transmitted infections
5.3 Aging
6 Orientations and society
6.1 Heterosexuality
6.2 Homosexuality
6.3
Bisexuality

Bisexuality and pansexuality
7 Other social aspects
7.1 General attitudes
7.2 Religious and ethical
7.3
Gender

Gender roles and the expression of sexuality
8 BDSM
9 Legal issues
9.1 Same-sex laws
9.2
Sex

Sex outside marriage
9.3 Minimum age of sexual activity (age of consent)
9.4 Incestuous relationships
9.5 Sexual abuse
9.6
Prostitution

Prostitution and survival sex
10 See also
11 References
12 Further reading
Types[edit]
Gerda Wegener's 1925 artwork "Les delassements d'Eros" ("The
recreations of Eros"), which depicts sexual activity by two women
Sexual activity can be classified in a number of ways: acts which
involve one person (also called autoeroticism) such as masturbation,
or two or more people such as vaginal sex, anal sex, oral sex or
mutual masturbation. If there are more than two participants in the
sex act, it may be referred to as group sex. Autoerotic sexual
activity can involve use of dildos, vibrators, anal beads, and other
sex toys, though these devices can also be used with a partner.
Sexual activity can be classified into the gender and sexual
orientation of the participants, as well as by the relationship of the
participants. For example, the relationships can be ones of marriage,
intimate partners, casual sex partners or anonymous. Sexual activity
can be regarded as conventional or as alternative, involving, for
example, fetishism, paraphilia, or
BDSM

BDSM activities.[1][2] Fetishism
can take many forms ranging from the desire for certain body parts,
for example large breasts, armpits or foot worship. The object of
desire can often be shoes, boots, lingerie, clothing, leather or
rubber items. Some non-conventional autoerotic practices can be
dangerous. These include erotic asphyxiation and self-bondage. The
potential for injury or even death that exists while engaging in the
partnered versions of these fetishes (choking and bondage,
respectively) becomes drastically increased in the autoerotic case due
to the isolation and lack of assistance in the event of a problem.
Sexual activity can be consensual, which means that both or all
participants agree to take part and are of the age that they can
consent, or it may take place under force or duress, which is often
called sexual assault or rape. In different cultures and countries,
various sexual activities may be lawful or illegal in regards to the
age, gender, marital status or other factors of the participants, or
otherwise contrary to social norms or generally accepted sexual
morals.
Stages of physiological arousal during sexual stimulation[edit]
This Indian
Kama sutra

Kama sutra illustration, which shows a woman on top of a
man, depicts the male erection, which is one of the physiological
responses to sexual arousal for men.
The physiological responses during sexual stimulation are fairly
similar for both men and women and there are four phases.[3]
During the excitement phase, muscle tension and blood flow increase in
and around the sexual organs, heart and respiration increase and blood
pressure rises. Men and women experience a "sex flush" on the skin of
the upper body and face. Typically, a woman's vagina becomes
lubricated and her clitoris becomes swollen.[3] A male's penis will
become erect.
During the plateau phase, heart rate and muscle tension increase
further. A man's urinary bladder closes to prevent urine from mixing
with semen. A woman's clitoris may withdraw slightly and there is more
lubrication, outer swelling and muscles tighten and reduction of
diameter.[3]
During the orgasm phase, breathing becomes extremely rapid and the
pelvic muscles begin a series of rhythmic contractions. Both men and
women experience quick cycles of muscle contraction of lower pelvic
muscles and women often experience uterine and vaginal contractions;
this experience can be described as intensely pleasurable, but roughly
15% of women never experience orgasm and half report having faked
it.[3] A large genetic component is associated with how often women
experience orgasm.[3]
During the resolution phase, muscles relax, blood pressure drops, and
the body returns to its resting state. Though generally reported that
women do not experience a refractory period and thus can experience an
additional orgasm, or multiple orgasms soon after the first,[4][5]
some sources state that both men and women experience a refractory
period because women may also experience a period after orgasm in
which further sexual stimulation does not produce excitement.[3][6]
This period may last from minutes to days and is typically longer for
men than women.[3]
Sexual dysfunction is the inability to react emotionally or physically
to sexual stimulation in a way projected of the average healthy
person; it can affect different stages in the sexual response cycles,
which are desire, excitement and orgasm.[7] In the media, sexual
dysfunction is often associated with men, but in actuality, it is more
commonly observed in females (43 percent) than males (31 percent).[8]
Psychological aspects[edit]
Sexual activity can lower blood pressure and overall stress levels,
regardless of age.[citation needed] It releases tension, elevates
mood, and may create a profound sense of relaxation, especially in the
postcoital period. From a biochemical perspective, sex causes the
release of endorphins and increases levels of white blood cells that
actually boost the immune system. A study published in the journal
Biological Psychology described how men who had had sex the previous
night responded better to stressful situations, it suggested that if a
person is regularly sexual, they're regularly relaxed, and when the
person is relaxed, they cope better with stressful
situations.[citation needed] A 2007 study published in the Archives of
Sexual Behavior 36, (no. 3 (June 2007): 357–68) reported that sexual
behavior with a partner on one day significantly predicted lower
negative mood and stress, and higher positive mood, on the following
day.
Motivations[edit]
"Pity sex" redirects here. For the American rock band, see Pity Sex.
People engage in sexual activity for any of a multitude of possible
reasons. Although the primary evolutionary purpose of sexual activity
is reproduction, research on college students suggested that people
have sex for four general reasons: physical attraction, as a means to
an end, to increase emotional connection, and to alleviate
insecurity.[9]
Most people engage in sexual activity because of pleasure they derive
from the arousal of their sexuality, especially if they can achieve
orgasm.
Sexual arousal

Sexual arousal can also be experienced from foreplay and
flirting, and from fetish or
BDSM

BDSM activities,[1][10] or other erotic
activities. Most commonly, people engage in sexual activity because of
the sexual desire generated by a person to whom they feel sexual
attraction; but they may engage in sexual activity for the physical
satisfaction they achieve in the absence of attraction for another, as
in the case of casual or social sex.[11] At times, a person may engage
in a sexual activity solely for the sexual pleasure of their partner,
such as because of an obligation they may have to the partner or
because of love, sympathy or pity they may feel for the partner.
A person may engage in sexual activity for purely monetary
considerations, or to obtain some advantage from either the partner or
the activity. A man and woman may engage in sexual intercourse with
the objective of conception. Some people engage in hate sex, which
occurs between two people who strongly dislike or annoy each other. It
is related to the idea that opposition between two people can heighten
sexual tension, attraction and interest.[12]
It has been shown that sexual activity plays a large part in the
interaction of social species. Joan Roughgarden, in her book
Diversity, Gender, and Sexuality in Nature and People, postulates that
this applies equally to humans as it does to other social species. She
explores the purpose of sexual activity and demonstrates that there
are many functions facilitated by such activity including pair
bonding, group bonding, dispute resolution and reproduction.[13]
Self-determination theory[edit]
Research has found that people also engage in sexual activity for
reasons associated with self-determination theory. The
self-determination theory can be applied to a sexual relationship when
the participants have positive feelings associated with the
relationship. These participants do not feel guilty or coerced into
the partnership.[14] Researchers have proposed the model of
self-determined sexual motivation. The purpose of this model is to
connect self-determination and sexual motivation.[15] This model has
helped to explain how people are sexually motivated when involved in
self-determined dating relationships. This model also links the
positive outcomes, (satisfying the need for autonomy, competence, and
relatedness) gained from sexual motivations.[15]
According to the completed research associated with this model, it was
found that people of both sexes who engaged in sexual activity for
self-determined motivation had more positive psychological
well-being.[15] While engaging in sexual activity for self-determined
reasons, the participants also had a higher need for fulfillment. When
this need was satisfied, they felt better about themselves. This was
correlated with greater closeness to their partner and higher overall
satisfaction in their relationship.[15] Though both sexes engaged in
sexual activity for self-determined reasons, there were some
differences found between males and females. It was concluded that
females had more motivation than males to engage in sexual activity
for self-determined reasons.[15] Females also had higher satisfaction
and relationship quality than males did from the sexual activity.[15]
Overall, research concluded that psychological well-being, sexual
motivation, and sexual satisfaction were all positively correlated
when dating couples partook in sexual activity for self-determined
reasons.[15]
Frequency[edit]
The examples and perspective in this section may not represent a
worldwide view of the subject. You may improve this article, discuss
the issue on the talk page, or create a new article, as appropriate.
(June 2015) (Learn how and when to remove this template message)
See also: Sexually active life expectancy
The frequency of sexual activity might range from zero (sexual
abstinence) to 15 or 20 times a week.[16] In the United States, the
average frequency of sexual intercourse for married couples is 2 to 3
times a week.[17][obsolete source] It is generally recognized
that postmenopausal women experience declines in frequency of sexual
intercourse[18] and that average frequency of intercourse declines
with age. According to the Kinsey Institute, the average frequency of
sexual intercourse in the US for individuals who have partners is 112
times per year (age 18–29), 86 times per year (age 30–39), and 69
times per year (age 40–49).[19]
Adolescents[edit]
See also: Adolescent sexuality
The age at which adolescents tend to become sexually active varies
considerably between different cultures and from time to time. (See
Prevalence of virginity.) The first sexual act of a child or
adolescent is sometimes referred to as the sexualization of the child,
and may be considered as a milestone or a change of status, as the
loss of virginity or innocence. Youth are legally free to have
intercourse after they reach the age of consent.
A 1999 survey of students indicated that approximately 40% of ninth
graders across the United States report having had sexual intercourse.
This figure rises with each grade. Males are more sexually active than
females at each of the grade levels surveyed. Sexual activity of young
adolescents differs in ethnicity as well. A higher percent of African
American and Hispanic adolescents are sexually active than White
adolescents.[20]
Research on sexual frequency has also been conducted solely on female
adolescents who engage in sexual activity.
Female

Female adolescents tended
to engage in more sexual activity due to positive mood. In female
teenagers, engaging in sexual activity was directly positively
correlated with being older, greater sexual activity in the previous
week or prior day, and more positive mood the previous day or the same
day as the sexual activity occurred.[21] Decreased sexual activity was
associated with prior or current day negative mood or
menstruating.[21]
Although opinions differ, others[who?] suggest that sexual activity is
an essential part of humans, and that teenagers need to experience
sex. Sexual experiences help teenagers understand pleasure and
satisfaction.[22] In relation to hedonic and eudaimonic well-being,
teenagers can positively benefit from sexual activity according to one
particular research study. In a rural upstate New York community, a
cross-sectional study of teenagers was completed in 2008 and 2009.
Teenagers who had their first sexual experience at age 16 revealed a
higher well-being than those who were sexually inexperienced or who
were first sexually active at a later age of 17.[22] Furthermore,
teenagers who had their first sexual experience at age 15 or younger,
or who had many sexual partners were not negatively affected and did
not have associated lower well-being.[22]
Health and safety[edit]
Sexual activity is a normal physiological function,[23] but like other
physical activity, it comes with risks. There are four main types of
risks that may arise from sexual activity: unwanted pregnancy,
contracting a sexually transmitted infection (STI/STD), physical
injury, and psychological injury.
Unwanted pregnancy[edit]
Main article: Unintended pregnancy
Any sexual activity that involves the introduction of semen into a
woman's vagina, such as during sexual intercourse, or even contact of
semen with her vulva, may result in a pregnancy.[24] To reduce the
risk of unintended pregnancies, some people who engage in
penile-vaginal sex may use contraception, such as birth control pills,
a condom, diaphragms, spermicides, hormonal contraception or
sterilization.[25] The effectiveness of the various contraceptive
methods in avoiding pregnancy varies considerably.
Sexually transmitted infections[edit]
A rolled-up male condom
Main article: Sexually transmitted infection
Sexual activity that involves skin-to-skin contact, exposure to an
infected person's bodily fluids or mucosal membranes[26] carries the
risk of contracting a sexually transmitted infection. People may not
be able to detect that their sexual partner has one or more STIs, for
example if they are asymptomatic (show no symptoms).[27][28] The risk
of STIs can be reduced by safe sex practices, such as using condoms.
Both partners may opt be tested for STIs before engaging in sex.[29]
The exchange of body fluids is not necessary to contract an
infestation of crab lice. Crab lice typically are found attached to
hair in the pubic area but sometimes are found on coarse hair
elsewhere on the body (for example, eyebrows, eyelashes, beard,
mustache, chest, armpits, etc.). Pubic lice infestations (pthiriasis)
are spread through direct contact with someone who is infested with
the louse.[30][31][32]
Some STIs can also be contracted by using IV drug needles after their
use by an infected person, as well as through childbirth or
breastfeeding.[medical citation needed]
Aging[edit]
See also: Sexuality in older age
Typically, older men and women maintaining interest in sexual interest
and activity could be therapeutic; it is a way of expressing their
love and care for one another. Factors such as biological and
psychological factors, diseases, mental conditions, boredom with the
relationship, and widowhood have been found to contribute with the
common decrease in sexual interest and activity in old age. National
sex surveys given in Finland in the 1990s revealed aging men had a
higher incidence of sexual intercourse compared to aging women and
that women were more likely to report a lack of sexual desire compared
to men. Regression analysis, factors considered important to female
sexual activity included: sexual desire, valuing sexuality, and a
healthy partner, while high sexual self-esteem, good health, and
active sexual history were important to male sexual activity. Both
aging genders agreed they needed good health, good sexual functioning,
positive sexual self-esteem, and a sexually skilful partner to
maintain sexual desire.[33]
Orientations and society[edit]
Main article: Sexual orientation
Heterosexuality[edit]
Main article: Heterosexuality
Brothel

Brothel scene in a public bath, ca. 1475
Heterosexuality

Heterosexuality is the romantic or sexual attraction to the opposite
sex. Heterosexual sexual practices are subject to laws in many places.
In some countries, mostly those where religion has a strong influence
on social policy, marriage laws serve the purpose of encouraging
people to have sex only within marriage.
Sodomy laws

Sodomy laws were seen as
discouraging same-sex sexual practices, but may affect opposite-sex
sexual practices. Laws also ban adults from committing sexual abuse,
committing sexual acts with anyone under an age of consent, performing
sexual activities in public, and engaging in sexual activities for
money (prostitution). Though these laws cover both same-sex and
opposite-sex sexual activities, they may differ in regard to
punishment, and may be more frequently (or exclusively) enforced on
those who engage in same-sex sexual activities.[34]
Different-sex sexual practices may be monogamous, serially monogamous,
or polyamorous, and, depending on the definition of sexual practice,
abstinent or autoerotic (including masturbation). Additionally,
different religious and political movements have tried to influence or
control changes in sexual practices including courting and marriage,
though in most countries changes occur at a slow rate.
Homosexuality[edit]
Main article: Homosexuality
See also:
Gay sexual practices

Gay sexual practices and Lesbian sexual practices
An Ottoman miniature from the book Sawaqub al-Manaquib depicting
homosexuality
Homosexuality

Homosexuality is the romantic or sexual attraction to the same sex.
People with a homosexual orientation can express their sexuality in a
variety of ways, and may or may not express it in their behaviors.[35]
Research indicates that many gay men and lesbians want, and succeed in
having, committed and durable relationships. For example, survey data
indicate that between 40% and 60% of gay men and between 45% and 80%
of lesbians are currently involved in a romantic relationship.[36]
It is possible for a person whose sexual identity is mainly
heterosexual to engage in sexual acts with people of the same sex. For
example, mutual masturbation in the context of what may be considered
normal heterosexual teen development. Gay and lesbian people who
pretend to be heterosexual are often referred to as being closeted
(hiding their sexuality in "the closet"). "Closet case" is a
derogatory term used to refer to people who hide their sexuality.
Making that orientation public can be called "coming out of the
closet" in the case of voluntary disclosure or "outing" in the case of
disclosure by others against the subject's wishes (or without their
knowledge). Among some communities (called "men on the DL" or
"down-low"), same-sex sexual behavior is sometimes viewed as solely
for physical pleasure. Men who have sex with men, as well as women who
have sex with women, or men on the "down-low" may engage in sex acts
with members of the same sex while continuing sexual and romantic
relationships with the opposite sex.
People who engage exclusively in same-sex sexual practices may not
identify themselves as gay or lesbian. In sex-segregated environments,
individuals may seek relationships with others of their own gender
(known as situational homosexuality). In other cases, some people may
experiment or explore their sexuality with same (or different) sex
sexual activity before defining their sexual identity. Despite
stereotypes and common misconceptions, there are no forms of sexual
acts exclusive to same-sex sexual behavior that cannot also be found
in opposite-sex sexual behavior, except those involving the meeting of
the genitalia between same-sex partners – tribadism (generally
vulva-to-vulva rubbing, commonly known by its "scissoring" position)
and frot (generally penis-to-penis rubbing).
Bisexuality

Bisexuality and pansexuality[edit]
Main articles:
Bisexuality

Bisexuality and Pansexuality
People who have a romantic or sexual attraction to both sexes are
referred to as bisexual.[37][38] People who have a distinct but not
exclusive preference for one sex/gender over the other may also
identify themselves as bisexual.[39] Like gay and lesbian individuals,
bisexual people who pretend to be heterosexual are often referred to
as being closeted.
Pansexuality

Pansexuality (also referred to as omnisexuality)[40] may or may not be
subsumed under bisexuality, with some sources stating that bisexuality
encompasses sexual or romantic attraction to all gender
identities.[41][42]
Pansexuality

Pansexuality is characterized by the potential for
aesthetic attraction, romantic love, or sexual desire towards people
without regard for their gender identity or biological sex.[43] Some
pansexuals suggest that they are gender-blind; that gender and sex are
insignificant or irrelevant in determining whether they will be
sexually attracted to others.[44] As defined in the Oxford English
Dictionary, pansexuality "encompasses all kinds of sexuality; not
limited or inhibited in sexual choice with regards to gender or
practice".[45]
Other social aspects[edit]
General attitudes[edit]
Alex Comfort and others propose three potential social aspects of
sexual intercourse in humans, which are not mutually exclusive:
reproductive, relational, and recreational.[46] The development of the
contraceptive pill and other highly effective forms of contraception
in the mid- and late 20th century has increased people's ability to
segregate these three functions, which still overlap a great deal and
in complex patterns. For example: A fertile couple may have
intercourse while using contraception to experience sexual pleasure
(recreational) and also as a means of emotional intimacy (relational),
thus deepening their bonding, making their relationship more stable
and more capable of sustaining children in the future (deferred
reproductive). This same couple may emphasize different aspects of
intercourse on different occasions, being playful during one episode
of intercourse (recreational), experiencing deep emotional connection
on another occasion (relational), and later, after discontinuing
contraception, seeking to achieve pregnancy (reproductive, or more
likely reproductive and relational).[citation needed]
Religious and ethical[edit]
Main articles: Sexual morality, Religion and sexuality, and Norm
(sociology)
Erotic sculptures found in a medieval Hindu temple in India
Most world religions have sought to address the moral issues that
arise from people's sexuality in society and in human interactions.
Each major religion has developed moral codes covering issues of
sexuality, morality, ethics etc. Though these moral codes do not
address issues of sexuality directly, they seek to regulate the
situations which can give rise to sexual interest and to influence
people's sexual activities and practices. However, the effect of
religious teaching has at times been limited. For example, though most
religions disapprove of extramarital sexual relations, it has always
been widely practiced. Nevertheless, these religious codes have always
had a strong influence on peoples' attitudes to issues of modesty in
dress, behavior, speech etc.
On the other hand, some people adopt the view that pleasure is its own
justification for sexual activity.
Hedonism

Hedonism is a school of thought
which argues that pleasure is the only intrinsic good.[47]
Human sexual activity, like many other kinds of activity engaged in by
humans, is generally influenced by social rules that are culturally
specific and vary widely. These social rules are referred to as sexual
morality (what can and can not be done by society's rules) and sexual
norms (what is and is not expected).
Sexual ethics, morals, and norms relate to issues including
deception/honesty, legality, fidelity and consent. Some activities,
known as sex crimes in some locations, are illegal in some
jurisdictions, including those conducted between (or among) consenting
and competent adults (examples include sodomy law and adult-adult
incest).
Some people who are in a relationship but want to hide polygamous
activity (possibly of opposite sexual orientation) from their partner,
may solicit consensual sexual activity with others through personal
contacts, online chat rooms, or, advertising in select media.
Swinging, on the other hand, involves singles or partners in a
committed relationship engaging in sexual activities with others as a
recreational or social activity.[48] The increasing popularity of
swinging is regarded by some as arising from the upsurge in sexual
activity during the sexual revolution of the 1960s. Swinging sexual
activity can take place in a sex club, also known as a swinger club
(not to be confused with a strip club).[49]
Some people engage in various sexual activities as a business
transaction. When this involves having sex with, or performing certain
actual sexual acts for another person in exchange for money or
something of value, it is called prostitution. Other aspects of the
adult industry include phone sex operators, strip clubs, and
pornography.
Gender

Gender roles and the expression of sexuality[edit]
Social gender roles can influence sexual behavior as well as the
reaction of individuals and communities to certain incidents; the
World Health Organization

World Health Organization states that, "
Sexual violence

Sexual violence is also more
likely to occur where beliefs in male sexual entitlement are strong,
where gender roles are more rigid, and in countries experiencing high
rates of other types of violence."[50] Some societies, such as those
where the concepts of family honor and female chastity are very
strong, may practice violent control of female sexuality, through
practices such as honor killings and female genital
mutilation.[51][52]
The relation between gender equality and sexual expression is
recognized, and promotion of equity between men and women is crucial
for attaining sexual and reproductive health, as stated by the UN
International Conference on Population and Development Program of
Action:[53]
"
Human sexuality

Human sexuality and gender relations are closely interrelated and
together affect the ability of men and women to achieve and maintain
sexual health and manage their reproductive lives. Equal relationships
between men and women in matters of sexual relations and reproduction,
including full respect for the physical integrity of the human body,
require mutual respect and willingness to accept responsibility for
the consequences of sexual behaviour. Responsible sexual behaviour,
sensitivity and equity in gender relations, particularly when
instilled during the formative years, enhance and promote respectful
and harmonious partnerships between men and women."
BDSM[edit]
A man handcuffed to a bed and blindfolded
A sketch of a nude woman with tied wrists
Main article: BDSM
BDSM

BDSM is a variety of erotic practices or roleplaying involving
bondage, dominance and submission, sadomasochism, and other
interpersonal dynamics. Given the wide range of practices, some of
which may be engaged in by people who do not consider themselves as
practicing BDSM, inclusion in the
BDSM

BDSM community or subculture is
usually dependent on self-identification and shared experience. BDSM
communities generally welcome anyone with a non-normative streak who
identifies with the community; this may include cross-dressers,
extreme body modification enthusiasts, animal players, latex or rubber
aficionados, and others.
B/D, a form of BDSM, is bondage and discipline. Bondage includes the
restraint of the body or mind.[54] D/S means "dominant and
submissive." A dominant is someone who takes control of someone who
wishes to give up control. A submissive is someone who gives up the
control to a person who wishes to take control.[54] S/M (sadism and
masochism) means an individual who takes pleasure in the humiliation
or pain of others. Masochism means an individual who takes pleasure
from their own pain or humiliation.[54]
Unlike the usual "power neutral" relationships and play styles
commonly followed by couples, activities and relationships within a
BDSM

BDSM context are often characterized by the participants' taking on
complementary, but unequal roles; thus, the idea of informed consent
of both the partners becomes essential. Participants who exert sexual
dominance over their partners are known as dominants or tops, while
participants who take the passive, receiving, or obedient role are
known as submissives or bottoms.
Individuals are also sometimes abbreviated when referred to in
writing, so a dominant person may be referred to as a "dom" for a man
or a woman. Sometimes a woman may choose to use the female specific
term "Domme". Both terms are pronounced the same when spoken.
Individuals who can change between top/dominant and bottom/submissive
roles—whether from relationship to relationship or within a given
relationship—are known as switches. The precise definition of roles
and self-identification is a common subject of debate within the
community.[55]
In a 2013 study, the researchers suggest that
BDSM

BDSM is a sexual act
where they play role games, use restraint, use power exchange, use
suppression and pain is sometimes involved depending on
individual(s).[56] The study indicates that, in the past,
BDSM

BDSM has
been seen as maladaptive to one's psychological health, but that this
may be incorrect. According to the study, one who participates in BDSM
can have greater strength socially, mentally and have greater
independence than those who do not practice BDSM.[56] It states that
people who participate in
BDSM

BDSM play actually have higher subjective
well-being, and that this might be due to the fact that
BDSM

BDSM play
requires extensive communication. Before any sexual act occurs, the
partners must discuss their agreement of their relationship. They
discuss how long the play will last, the intensity, their actions,
what each participant needs or desires. The sexual acts are all
consensual and pleasurable to both parties.[56]
In a 2015 study,
BDSM

BDSM relationships were suggested to have a higher
level of connection, intimacy, trust and communication compared to
individuals who do not practice BDSM.[54] The study suggests that
dominants and submissives exchange control for each other's pleasure
and to satisfy a need. They mention that both parties enjoys pleasing
their partner in any way they can. Submissive and Dominants who
participated in their research, felt that this is one of the best
things about BDSM. It gives a submissive pleasure to do things in
general for their dominant. Where Dominant enjoys making their
encounters all about the submissive. They enjoy doing things that
makes their submissive happy. Their findings suggest that submissives
and dominants found
BDSM

BDSM play more pleasurable and fun.
BDSM

BDSM was also
suggested to improve personal growth, romantic relationships, their
sense of community, their sense of self, the dominants confidence, and
help an individual cope with everyday things by giving them a
psychological release.[54]
Legal issues[edit]
Main article:
Sex

Sex and the law
There are many laws and social customs which prohibit, or in some way
affect sexual activities. These laws and customs vary from country to
country, and have varied over time. They cover, for example, a
prohibition to non-consensual sex, to sex outside marriage, to sexual
activity in public, besides many others. Many of these restrictions
are non-controversial, but some have been the subject of public
debate.
Most societies consider it a serious crime to force someone to engage
in sexual acts or to engage in sexual activity with someone who does
not consent. This is called sexual assault, and if sexual penetration
occurs it is called rape, the most serious kind of sexual assault. The
details of this distinction may vary among different legal
jurisdictions. Also, what constitutes effective consent in sexual
matters varies from culture to culture and is frequently debated. Laws
regulating the minimum age at which a person can consent to have sex
(age of consent) are frequently the subject of debate, as is
adolescent sexual behavior in general. Some societies have forced
marriage, where consent may not be required.
Same-sex laws[edit]
Main article: LGBT rights by country or territory
Many locales have laws that limit or prohibit same-sex sexual
activity.
Sex

Sex outside marriage[edit]
In the West, sex before marriage is not illegal. There are social
taboos and many religions condemn pre-marital sex. In many Muslim
countries, such as Saudi Arabia, Pakistan,[57]
Afghanistan,[58][59][60] Iran,[60] Kuwait,[61] Maldives,[62]
Morocco,[63] Oman,[64] Mauritania,[65] United Arab Emirates,[66][67]
Sudan,[68] Yemen,[69] any form of sexual activity outside marriage is
illegal. Those found guilty, especially women, may be forced to wed
the sexual partner, publicly beaten, or stoned to death.[70] In many
African and native tribes, sexual activity is not viewed as a
privilege or right of a married couple, but rather as the unification
of bodies and is thus not frowned upon.[71]
Other studies have analyzed the changing attitudes about sex that
American adolescents have outside marriage. Adolescents were asked how
they felt about oral and vaginal sex in relation to their health,
social, and emotional well-being. Overall, teenagers felt that oral
sex was viewed as more socially positive amongst their
demographic.[72] Results stated that teenagers believed that oral sex
for dating and non-dating adolescents was less threatening to their
overall values and beliefs than vaginal sex was.[72] When asked,
teenagers who participated in the research viewed oral sex as more
acceptable to their peers, and their personal values than vaginal
sex.[72]
Minimum age of sexual activity (age of consent)[edit]
Main article: Age of consent
The laws of each jurisdiction set the minimum age at which a young
person is allowed to engage in sexual activity.[73] This age of
consent is typically between 14 and 18 years, but laws vary. In many
jurisdictions, age of consent is a person's mental or functional
age.[74][74][75][76] As a result, those above the set age of consent
may still be considered unable to legally consent due to mental
immaturity.[74][75][76][77][78] Many jurisdictions regard any sexual
activity by an adult involving a child as child sexual abuse.
Age of consent

Age of consent may vary by the type of sexual act, the sex of the
actors, or other restrictions such as abuse of a position of trust.
Some jurisdictions also make allowances for young people engaged in
sexual acts with each other.[79]
Incestuous relationships[edit]
Most jurisdictions prohibit sexual activity between certain close
relatives. These laws vary to some extent; such acts are called
incestuous.
Sexual abuse[edit]
Main articles: Sexual abuse, Rape, and Sexual assault
Non-consensual sexual activity or subjecting an unwilling person to
witnessing a sexual activity are forms of sexual abuse, as well as (in
many countries) certain non-consensual paraphilias such as
frotteurism, telephone scatophilia (indecent phonecalls), and
non-consensual exhibitionism and voyeurism (known as "indecent
exposure" and "peeping tom" respectively).[80]
Prostitution

Prostitution and survival sex[edit]
Main article: Prostitution
People sometimes exchange sex for money or access to other resources.
This practice, called prostitution, takes place under many varied
circumstances. The person who receives payment for sexual services is
called a prostitute and the person who receives such services is known
by a multitude of terms, including (and most commonly) "john."
Prostitution

Prostitution is one of the branches of the sex industry. The legal
status of prostitution varies from country to country, from being a
punishable crime to a regulated profession. Estimates place the annual
revenue generated from the global prostitution industry to be over
$100 billion.[81]
Prostitution

Prostitution is sometimes referred to as "the
world's oldest profession".[82]
Prostitution

Prostitution may be a voluntary
individual activity or facilitated or forced by pimps.
Survival sex

Survival sex is a form of prostitution engaged in by people in need,
usually when homeless or otherwise disadvantaged people trade sex for
food, a place to sleep, or other basic needs, or for drugs.[83] The
term is used by sex trade and poverty researchers and aid
workers.[84][85]
See also[edit]
Sexuality portal
Child sexuality
Erotic plasticity
False pleasure
History of human sexuality
Human female sexuality
Human male sexuality
Lesbian sexual practices
Mechanics of human sexuality
Orgasm

Orgasm control
Orgastic potency
Sexual activity during pregnancy
Sociosexual orientation
Transgender sexuality
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Further reading[edit]
Wikimedia Commons has media related to
Sex

Sex in humans.
Agmo Anders, Functional and dysfunctional sexual behavior. Elsevier
2007
Durex Global
Sex

Sex Survey 2005 (PDF) at data360.org
Ryan, Christopher & Jetha, Cacilda, (2010).
Sex

Sex at Dawn: The
Prehistoric Origins of Modern Sexuality. New York: Harper.
Wunsch Serge PhD thesis about sexual behavior (PDF) Paris, Sorbonne
2007
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