You inhale about 700,000 of your own skin flakes each day.
You have no sense of smell when you're sleeping!
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
Men have larger hearts; women's hearts beat faster.
There are 206 bones in the human body!
You mostly breathe from only one nostril at a time!
Women buy four out of every 10 condoms sold.