Women often put on weight as a result of moving in with a man.
(Research shows that women tend to gain weight once they cohabit and begin to share meals with men who intrinsically have higher energy needs and therefore appetites. Well that's my excuse anyway, maybe I could make the "No man diet" an internet hit.)
International safety standards state that pen tops should have a hole in the top to minimize the risk involved when children accidently inhale them. I think the idea is that you could continue to breathe throught the hole.
(Anyone who knows me knows that they shouldn't just worry about children.)
Habitual liars' brains differ from those of honest people.
(Seemingly pathological liars have up to 26% more white matter than people who don't lie. This white matter transmits information and grey matter processes it. Having more white matter in the prefrontal cortex may aid lying. Hmmm - I shall refrain from looking.)