The scientific subject of sexuality is much more exciting than an awkward sexual urge ed class . While writing my bookSex Weird - o - Pedia , these were some of the most interesting facts about scientific discipline and sex that I came across .
1. Some sex researchers didn’t want their findings to get into the wrong hands.
The pioneer sex researcher Richard von Krafft - Ebing did n’t want his knowledge in the hired man of ordinary family line . So he wrotePsychopathia Sexualis , the founding text file of modern sexology — which was published in Germany in 1886 then translated and issue in English in 1939 — in Romance todiscourageregular Joes ( and/or Janes ) from learn it .
2. You burn more calories mowing the lawn than you do having sex.
Sexmight seem strenuous when things get red-hot and heavy , but it ’s usually not that gravid of a workout . You ’d have to go at it for most 200 minute of arc to combust as much vigour having sex as you do during a 30 - minute runnel . Even mowing the lawn glow about three time more calories than sex . According to the British Heart Foundation , gender burns about thesame amountof energy per minute as ironing clothes .
3. A surprising number of mothers claim to be virgins.
In a 2013 study of several thousand pregnant women in the U.S.published by BMJ , about 1 percent of the participantsclaimedthey were virgins when they gave birth . This , of course , calls into enquiry the veracity of studies that rely on self - reported sexual behaviors .
4. Penicillin may have ignited the sexual revolution.
One economic expert says that penicillin , and not the birth control tab , was thereal enablerof the sexual revolution . Astudypublished in theArchives of Sexual Behaviorin 2013 shew that penicillin contributed to a 75 pct decline in the figure of last make by syphilis from 1947 to 1957 . Since the new intervention made sex safer , people started having risky sex , which resulted in increases in the numbers of children born out of spousal relationship and teenage pregnancies .
5. Twins can have different dads.
While it is very rarefied , it ispossiblefor fraternal twins to have two different Father-God . What ’s more common is for arom - comto be free-base on this scenario .
6. Gender may influence how people handle sexual jealousy.
inquiry from evolutionary psychologist indicates that people ’s sexuality influences how they react to sexual green-eyed monster . For men , they respond more strongly to intimate infidelity than aroused infidelity . For fair sex , it is the reverse . The theorybehind these behaviour comes back to development : male who were intolerant toward their married woman becoming sexually fighting with other human being were less probable to become an object of derision and more likely to see their own gene transcend onto future generations . woman who prevent their married man from emotionally bond with other woman reduced the chances of the men spending their resource on other cleaning lady .
7. One of Ivan Pavlov’s colleagues created his own (slightly x-rated) conditioning experiment with dogs.
You ’re probably aware of Russian investigator Ivan Pavlov and his celebrated conditioning experiment in which he trained a domestic dog to drool at the sound of a bell . What you might not cognize is that one of Pavlov ’s American student , W. Horsley Gantt , qualify dogsto become sexually call forth when they heardspecific shade . The experiment , according to Mandy Merck’sIn Your Face : 9 Sexual Studies , was intended " to study conflicts of the drives between … experimentally induce anxiety states and intimate fervour . "
8. Couples whose first child is a girl are more likely to get divorced.
Married couples whose first child is a girl aremore likelyto get divorced than those whose first child is a son . scientist are separate as to why this is . One theoryis that female embryos are better capable to endure enate emphasis than virile embryos , so fraught cleaning lady in unhappy marriages are less likely to have a miscarriage if the tike they are bearing is a girl . But once they have a girl , these couples are more likely to dissever up since there were already fissures in their relationship prior to the child ’s birth .
9. There’s a link between pubic hair and STIs.
A downside of pubic preparation is that itmight raiseSTI jeopardy . In astudyconducted by a University of Texas student , hoi polloi who regularly shaved their pubic region take STIs about 80 per centum more often than those who never shaved down there . One suggestion is that those who regularly shave are more probable to tear their pelt , making it gentle for virus to get into the body .
Ross Benes is the author ofSex Weird - o - Pedia : The Ultimate Book of Shocking , Scandalous , and Incredibly Bizarre Sex Facts .
