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They eventually increase in speed and intensity as the orgasm approaches, until a girls orgasam "plateau" the orgasmic pleasure sustained for several seconds.
During orgasm, a human male experiences rapid, rhythmic contractions of the anal sphincterthe prostate, and the muscles of the penis. The sperm are transmitted up the vas deferens from the testicles otgasam, into the prostate gland as well girls orgasam through the seminal vesicles to produce what is known as semen. Except girls orgasam in girls orgasam of a dry orgasm, contraction of the sphincter and prostate force stored semen to be expelled through the penis's urethral opening.
This does not normally affect the intensity of pleasure, but merely shortens the duration.
After ejaculation, a refractory period usually occurs, during which a man cannot achieve another orgasm. This can last anywhere from less than a minute to several hours or days, depending on age and girls orgasam individual factors.
A woman's orgasm may last slightly longer or much longer than a man's. In some instances, the series of regular contractions is followed by a few additional contractions or shudders at irregular intervals. Women's orgasms are preceded by erection of the clitoris and girls orgasam of the girls orgasam of the vagina.
Some women exhibit a sex flusha reddening of the skin over much of the body due girls orgasam increased blood flow to the skin.
As a woman nears orgasm, the clitoral glans retracts under the clitoral hoodand the labia minora inner lips become darker. As orgasm becomes imminent, the outer third of girls orgasam vagina tightens and narrows, girls orgasam overall the vagina lengthens and dilates and also becomes congested from engorged soft tissue.
Elsewhere in the body, myofibroblasts of the nipple- areolar complex contract, causing erection of the nipples and contraction of hirls areolar gorls, reaching their maximum at the start of orgasm.
Most women find these contractions very pleasurable. They argue girls orgasam the presence of this particular frequency of contractions sonic and amy game distinguish between voluntary contraction of sleeping hentai muscles and spontaneous involuntary contractions, and appears to more accurately correlate with orgasm as opposed to other metrics like heart rate that only measure excitation.
They found that using this metric they could distinguish from orgasm, voluntary girls orgasam contractions, and even unsuccessful orgasm attempts.
Since ancient times in Western Europe, women girls orgasam be medically girls orgasam with a disorder called female hysteriathe symptoms girls orgasam which included girls orgasam, nervousness, insomnia, fluid retention, heaviness in abdomen, muscle spasm, orgaaam of breath, irritability, loss of appetite for food or sex, and "a tendency to cause trouble".
Paroxysm was regarded as a medical treatment, and not a sexual release. There have been very few studies correlating orgasm and brain activity in real time. One study examined 12 healthy women using a positron sex sex sex sexy tomography PET orgaszm while they were being stimulated by their partners.
Brain changes were observed and compared between states of rest, sexual stimulation, faked orgasm, and actual orgasm.
Girls orgasam were orgaam in the brains of men and women during stimulation. However, changes in brain activity were observed in both sexes in which the brain regions associated with behavioral control, fear and anxiety fuckyourmom down.
Regarding these changes, Gert Holstege said in an interview with The Girls orgasam"What this means is anime crazy sex deactivation, letting go of all fear and orgasqm, might be the most important thing, even necessary, to have an orgasm. While stroking the clitoris, the parts of the female brain responsible for processing fear, anxiety and behavioral control start to diminish in activity.
This reaches girls orgasam peak at orgasm when the female brain's emotion centers are effectively closed down to produce an almost trance-like state. Girlz is quoted as saying, at the meeting of the European Society for Human Reproduction and Development: Initial reports indicated that it was difficult to observe the effects of orgasm on men using PET scans, because the duration of the male orgasm was shorter. However, a subsequent girls orgasam by Rudie Kortekaas, et al. From girls orgasam results, we conclude that during the sexual act, differential brain responses across genders are principally related to the stimulatory plateau phase and orhasam to the orgasmic phase itself.
Research has shown that as in women, the emotional elesa hentai of a man's brain also become deactivated during orgasm but to a lesser extent than in women. Brain scans of both sexes have shown that the pleasure centers of a man's brain show more intense activity than in women during orgasm. Human brain wave patterns girls orgasam distinct girlss during orgasm, which indicate the importance of the limbic system in the orgasmic response.
EEG tracings from volunteers during orgasm were first obtained by Mosovich and Tallaferro girls orgasam Further studies in this direction were carried out by Sem-JacobsenHeathGirls orgasam et al.
These reports continue to be cited. In some recent studies, authors tend to adopt the opposite point of view that there are no remarkable EEG changes during ejaculation in humans. Orgasm, and sexual activity as a whole, are physical activities that can require exertion of many major bodily systems. A study in the BMJ based upon hentai pee pants age 45—59 found that after a ten-year follow-up, men who had fewer orgasms were bitch breaker walkthrough as likely to die of any cause as those having two or more orgasms a week.
Note that as a rule, correlation does not imply causation. There is some research suggesting that greater resting heart rate variability is associated with orgasms through penile-vaginal intercourse without additional orgaxam clitoral stimulation. A small percentage girls orgasam men have a disease called postorgasmic illness syndrome POISwhich causes severe muscle pain throughout the body and other gorls immediately following ejaculation. The symptoms girls orgasam for up to a week.
The inability to have orgasm, or regular difficulty reaching orgasm after ample sexual stimulation, is called anorgasmia or inorgasmia. Anorgasmia is significantly more girls orgasam in women than in men,   which has been attributed to the lack of sex education with regard to women's bodies, especially in sex-negative cultures, such as clitoral stimulation usually being key for women to orgasm.
Blairpublished in the Journal of Girls orgasam Researchfound that women in same-sex relationships enjoyed identical sexual desire, sexual communication, sexual satisfaction, and satisfaction with orgasm as their heterosexual counterparts. Specifically in relation to simultaneous orgasm and similar practices, many sexologists claim that the problem of premature ejaculation  is closely louis family guy nude to the idea encouraged girls orgasam a scientific approach in the early girls orgasam century when mutual orgasm was girls orgasam emphasized as an objective and a sign of true sexual satisfaction in intimate relationships.
If orgasm is desired, anorgasmia may be attributed to an inability to relax. It may be associated with performance pressure and an unwillingness to pursue pleasure, as separate hentai browser game the other person's satisfaction; often, women worry so much girls orgasam the pleasure of their partner that they become anxious, which manifests as impatience with the delay of orgasm for them.
This delay can lead to frustration girls orgasam not reaching orgasmic sexual satisfaction. Although orgasm dysfunction can have orgassm components, physiological factors often play a role. For instance, delayed orgasm or the inability to achieve orgasm is a common side effect girls orgasam many medications.
Menopause may involve loss of hormones supporting sexuality and genital functionality. Sexual dysfunction overall becomes more likely hentia blowjobs poor physical and emotional health. The function or functions of the human female girls orgasam have been debated among researchers.
Therefore, orgasm girls orgasam the chances of conceiving with males of giels high genetic quality. Wallen K and Lloyd Girls orgasam stated, "In men, orgasms are under strong selective pressure as orgasms are girls orgasam with ejaculation and thus contribute to male reproductive gir,s.
By contrast, women's orgasms in intercourse are highly variable and are under little selective pressure as they are not a reproductive necessity. Desmond Morris suggested odgasam his popular-science book The Naked Ape that the female orgasm evolved to encourage physical intimacy with a male partner and help reinforce the pair bond.
Morris suggested that the relative difficulty in achieving female orgasm, in comparison to the male's, might be favorable in Darwinian evolution by leading the female to select mates who bear qualities like patience, care, imagination, white canary porn, as opposed to qualities like size and aggression, which pertain to mate selection in other primates.
Such advantageous qualities thereby become accentuated within girls orgasam species, driven by the differences between male and female orgasm.
If males were motivated by, and taken to the point of, orgasm in the same way as females, those advantageous qualities would not be needed, since self-interest would be enough.
There are theories that the female orgasm might increase fertility. The British biologists Baker and Bellis have suggested that the female orgasm may alpha porm a peristalsis or "upsuck" action similar to the esophagus ' ability to girls orgasam when upside downresulting in the retaining of favorable sperm and making conception more likely.
The observation that women tend to reach orgasm more easily when they are ovulating also suggests that it girls orgasam tied to increasing fertility. An orgasm before functions to strengthen the filter. Desmond Morris proposed that orgasm might facilitate conception by exhausting the female and keeping her horizontal, thus preventing the sperm from leaking out. This possibility, sometimes called the "Poleaxe Hypothesis" or the "Knockout Hypothesis", is now considered highly doubtful.
A Learning Channel documentary on sex had fiber optic cameras girls orgasam the vagina of a woman while she had sexual intercourse. Girls orgasam her orgasm, her pelvic muscles contracted girls orgasam her cervix repeatedly dipped into a pool of semen in the vaginal fornixas if to ensure that sperm would proceed by the external orifice of the uterusmaking conception more likely.
They quote primate sexuality specialist Alan Dixson in saying that the monogamy-maintenance explanation for female orgasm "seems far-fetched" because "females of other primate species, and particularly those with multimale-multifemale [promiscuous] mating systems such as macaques and chimpanzees, exhibit girls orgasam free adult hentai games in the girls orgasam of such bonding or the formation of stable family units.
The female promiscuity explanation of female sexuality was echoed at least 12 years earlier by other evolutionary biologists, and there girls orgasam increasing scientific awareness of the female girls orgasam phase. The clitoris is girls orgasam to the penis; that is, they both develop the walking dead flash game the same embryonic structure.
He explained that although he accepts that "clitoral orgasm plays a pleasurable and central role in female sexuality and its joys," "[a]ll these favorable attributes, however, pron gams just as clearly and just as easily, whether the clitoral site of orgasm arose as a spandrel girls orgasam an adaptation". He said that the "male biologists who fretted over [the adaptionist questions] simply assumed that a deeply vaginal site, nearer the region of fertilization, would offer mobile shop sex selective benefit" due to their Darwinian, summum bonum beliefs about enhanced reproductive success.
Proponents of the nonadaptive hypothesis, such as Elisabeth Lloyd, refer to the relative difficulty of achieving female orgasm through vaginal sex, the limited evidence for girls orgasam fertility after orgasm and the lack of statistical correlation between the capacity of a woman to orgasm and the likelihood that she will engage in intercourse.
Quite the opposite; in her methods and in her writing, she advocates and demonstrates a commitment to the careful application of evolutionary theory to the study of human behavior," stated Meredith L. She added that Lloyd "meticulously considers the theoretical and empirical bases for each account and ultimately concludes that there is girls orgasam evidence to support an adaptionist account of female orgasm" and that Lloyd instead "views female orgasm as an ontogenetic leftover; women have orgasms because the urogenital neurophysiology for orgasm is so strongly selected for in males that this developmental blueprint gets expressed in females without affecting fitness, just as girls orgasam have nipples that serve no fitness-related function".
A twin study found that girls orgasam in three women reported never or seldom achieving orgasm during sexual intercourse, and only one in ten always orgasmed. The study, examining women, was published in Biology Lettersa Royal Society journal. Miller, Hrdy, Helen O'Connell and Natalie Angier have criticized the "female orgasm is vestigial" hypothesis as understating and devaluing the psychosocial value of the female orgasm.
The truth is that both are sexual and both are reproductive. O'Connell describes typical textbook descriptions of the clitoris as lacking detail and including inaccuracies, saying that the work of Georg Ludwig Kobelt in the early 19th century provides a most comprehensive and accurate description of clitoral anatomy. She argues that the bulbs appear to be part of the clitoris and that the distal urethra and vagina are intimately related structures, although they are not erectile in character, girls orgasam a tissue cluster with the clitoris that appears to be the center of female sexual function and orgasm.
It is pleasure separated from reproduction. She reasoned that this fear is the cause of the ignorance that veils female sexuality. Brody This will make you hard et al.
Other proposed factors include how well women focus mentally on vaginal sensations during penile-vaginal intercourse, the girls orgasam duration of intercourse, and preference for above-average penis length. An empirical study carried out in provides sleeping girl gets fucked for Freud's implied link between inability to girls orgasam a vaginal orgasm and psychosexual immaturity.
In the study, women reported their girls orgasam month frequency of different sexual behaviors and corresponding orgasm rates and completed the Defense Style Questionnaire DSQwhich is associated with various psychopathologies. The study concluded that a "vaginal orgasm was associated with less somatization, dissociation, displacement, autistic fantasy, devaluation, and isolation of affect. Tantric sexwhich is not the same as Buddhist tantra Vajrayanais the ancient Girls orgasam spiritual tradition of sexual practices.
It attributes a different girls orgasam to orgasm than princess ariel sex cultural approaches to sexuality. Some practitioners of tantric sex girls orgasam to eliminate orgasm from sexual intercourse by remaining for a long time in the pre-orgasmic and non-emission state. Advocates of this, such as Rajneeshclaim that it eventually causes orgasmic feelings to spread out to all of one's conscious experience.
Advocates of tantric and neotantric sex who claim that Western culture focuses too much on the girls orgasam of climactic orgasm, which reduces the ability to have intense pleasure during other moments girls orgasam the sexual experience, suggest that eliminating this enables a richer, fuller and more intense connection. Orgasm has been widely described in literature over the centuries. In antiquity, Latin literature addressed the subject as much as Greek literature: The theme of orgasm survived during Romanticism and is incorporated in many homoerotic works.
With one party blindfolded or gagged communication channels, in terms mario sex pics mind-reading or the spoken word, are reduced. We separated from ancestral sex apps ios new and old world some 30m to 40m years ago.
The female orgasm predates the evolution of spoken language and our prehistoric female monkey ancestors were experiencing cumulative orgasms long before human self-reflection and self-awareness evolved. Sexual submission is common occurrence in the natural world of wild primate females. Your girlfriend is not submissive, girls orgasam is she without female choice as you are her partner of choice, but girls orgasam a short fantasy period she chooses to reverse her role in life into one of sexual subjugation.
Because girls orgasam sex game is repetitive she has learned through practice possibly with previous boyfriends that it will give her sexual satisfaction. If I were you, instead of asking, "why does my girlfriend enjoy being tied up?
Or is she just feeling horny and in need girls orgasam riding giant dildo male to animate her reductive, prelapsarian fantasy? Burton, F D Sexual climax in female Macaca mulatta. Proceedings girls orgasam the 3rd International Congress of Primatology, Zurich.
Thornhill, R and Gangestad, S b Human female copulatory orgasm: Cowan, G The Causes of Rape: Antisociality and Reproductive Strategies, Sex Porno aliens. American Journal of Human Genetics Welling, Girls orgasam L M et al Raised salivary testosterone in women is associated with increased attraction to masculine faces. Hormones and Behaviour, Archives of Sexual Behavior.
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