New research provides evidence that sexual intercourse has greater sedative properties for women than it does for men. The findings have been published in Evolutionary Behavioral Sciences. The study of female and 98 male college students found that women reported a higher likelihood of falling asleep after heterosexual penile—vaginal intercourse than did men. Women were also more likely to report falling asleep before their partner compared to men.
New research indicates that women are more likely to fall asleep after sex than men
This study aimed to verify if girls are at a higher risk to present sleep problems and if associations of a sleep perception are different between sexes even when accounting for biological maturation. Participants were adolescents girls , mean age Participants' socio-demographic characteristics included sex, age, school grade, father and mother education; besides participants were inquired about sleep duration and characteristics of their sleep quality. The most prevalent characteristics of poor sleep quality were waking up tired
Sleep in adolescence: sex matters?
The main objective of this investigation was to ascertain whether there are, in the female, periods of sexual excitation or arousal during REM sleep similar to the cycle of penile erections in the male. In a group of 10 subjects, 21—35, utilizing a thermoconductance method that gives a measure of vaginal blood flow VBF , we are able to confirm that females manifest cyclic episodes of vascular engorgement during REMPs equivalent to erections in men. The increases in VBF, in terms of rises of the recording pen on the graph paper, varied from 10 to 45 mm. In order to ascertain the significance of these increases, we compared these sleep responses with waking VBF responses evoked by nonerotic and erotic stimuli and by masturbation. Only erotic stimuli gave VBF responses, the greatest to the movie and masturbation; these were no greater than the maximum levels attained during sleep, namely 40 to 45 mm.
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