The vaginal canal has a collapsed, folded structure (rugae) that expands when aroused or during childbirth. These folds increase elasticity and surface area.
Selfies may increase social sensitivity.
One study found that taking and sharing selfies was associated with a higher level of social sensitivity, meaning people become more attuned to social cues (like how others perceive them)
The “doggy style” position — where one partner bends over, gets on all fours, or leans forward for penetration — is classified as a rear‑entry sex position in human sexuality research
Even though there are more stars in the universe than grains of sand on the Earth, its a fact that their are more trees on the Earth than stars in the Milky Way
