Body weight might not be a strong indicator of reproductive physiology during sex. A study of couples found that male and ...

Evolutionary theory has a lot to say about sex and relationships and can often explain mating phenomena in a way that no other theories can. Here are five key evolutionary theories that are the ...

We can quickly dismiss the claim that copulation during pregnancy is unique to humans. It is easy to understand how this myth originated. Copulation after conception seemingly serves no useful ...

Not being 12, one of the more interesting things about this study is that a 20 year old MRI machine could capture images of moving subjects. In the majority of depictions of MRI use, patients are ...