The skin on your lips is 200 times more sensitive than your fingertips.
345
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Fingernails grow nearly 4 times faster than toenails!
30
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Every cigarette smoked cuts at least five minutes of life on average, which is roughly the time it takes to smoke one cigarette.
118
Pain occurs when sounds are above 130 db.
124
When your face blushes, the lining of your stomach turns red, too.
154
Kissing an infection-free partner is good for your teeth!
141