91色情片
Pain during intercourse is common among women who have sex with men
A survey of women who have had vaginal sex with men found that 4 in 5 said they had experienced pain during intercourse
News
91色情片
Bisexual women expect to have an orgasm with women more than with men
News
Humans
People watch sports, have sex, make children, study finds
Regulars
Life
Female scorpions get stung during sex 鈥� and they seem to welcome it
News
Mind
The surprising benefits of having an asymmetrical face, body and brain
Features
Mind
The peculiar discoveries reviving the search for human pheromones
Features
91色情片
Space flight may increase erectile dysfunction among astronauts
News
Life
Bat uses its huge penis like an arm during sex
News
Life
Do animals know that sex leads to babies?
News
Life
Female frogs sometimes play dead to avoid mating with males
Frog mating can be a competitive and sometimes deadly affair as many males compete for females 鈥� but females have some tricks to avoid unwanted attention
News
Life
Female stick insect clones itself despite having sex with males
News
Life
Sex between two males is extremely common in wild macaque monkeys
News
91色情片
Neurons that respond to vibration discovered in the clitoris and penis
News
Humans
Humans were kissing at least 4500 years ago, reveal ancient texts
News