It is possible to go blind from smoking too heavily.
50
One quarter of the bones in your body are in your feet!
36
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
Women buy four out of every 10 condoms sold.
71
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
The tongue is the strongest muscle in the human body.
50