Coitus is derived from the Latin word coitio or coire, meaning "a coming together or joining together" or "to go together", and is known under different ancient Latin names for a variety of sexual activities, but usually denotes penile—vaginal penetration. Lerner and Laurence Steinberg state that researchers also "rarely disclose" how they conceptualize sex "or even whether they resolved potential discrepancies" in conceptualizations of sex. While most consider penile—vaginal intercourse to be sex, whether or not anal or oral intercourse is considered sex is more debatable, with oral sex ranking lowest. Human mating strategies and Pair bond Copulation 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. 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.
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Sex by the numbers: This is how many partners men and women average in a lifetime
10 surprising sex statistics - Health - Sexual health | NBC News
New England and Dallas secured NFL playoff berths with home triumphs Sunday while New Orleans claimed a home-field edge and reigning champion Philadelphia stayed in the title chase. Australia skipper Tim Paine said Monday he is relishing his sometimes heated battle with animated Indian counterpart Virat Kohli, and promised "intense, hard" cricket in the crunch Boxing Day Test at Melbourne. A new record time for Australia's toughest yacht race could be thwarted by shifting winds in the notoriously wild Bass Strait after the Sydney-Hobart begins on Wednesday. American box office New Warner Bros. In a rare emotional address ahead of his abdication next year, Japanese Emperor Akihito said he took "deep comfort" that his long reign had been one of peace as he remembered the "countless lives" lost in World War II. British marine who led Bosnia with an iron fist Paddy Ashdown, who died on Saturday aged 77, was a former marine and British opposition politician who served as the top international envoy in Bosnia following the Yugoslav Wars. Paddy Ashdown, who died on Saturday aged 77, was a former marine and British opposition politician who served as the top international envoy in Bosnia following the Yugoslav Wars.
Tell Us How Many People You’ve Slept With. We’ll Tell You if That’s a Lot.
Get free updates by Email Get Email Updates! Minimum Legal Age of Consent - Female Tweet This map shows the female legal age of consent for heterosexual sex in different countries around the world. The age of consent is the age at which a young person is legally able to understand and agree to consensual sex. In most countries, until you reach this age it is illegal for somebody to have sex with you, however old they may be.
Evolution of monogamy Monogamy occurs when one male mates with one female exclusively. A monogamous mating system is one in which individuals form long-lasting pairs and cooperate in raising offspring. These pairs may last for a lifetime, such as in pigeons ,  or it may occasionally change from one mating season to another, such as in emperor penguins. Zoologists and biologists now have evidence that monogamous pairs of animals are not always sexually exclusive. Many animals that form pairs to mate and raise offspring regularly engage in sexual activities with extra-pair partners.