Fingernails grow nearly 4 times faster than toenails.
31
Every cigarette smoked cuts at least five minutes of life on average, which is roughly the time it takes to smoke one cigarette.
118
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
Your skin is actually an organ.
88
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
In Japan, condoms are commonly sold 'door to door'!
54