If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
Your heart beats over 100,000 times a day!
54
Chewing gum boosts your brain power.
285
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
