If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Banging your head against a wall uses 150 calories an hour.
57
When your face blushes, the lining of your stomach turns red, too.
154
More people have a phobia of frogs than rats.
41
Your heart beats over 100,000 times a day!
54
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
Panophobia is the fear of everything.
52