In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
A man's beard grows fastest when he anticipates sex.
239
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Gorillas can catch human colds and other illnesses.
205
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Every human spent about half an hour as a single cell.
144