In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
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 person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
A man's beard grows fastest when he anticipates sex.
239
The average person will go on a date at least 100 times before they finally marry.
33
Enamel is hardest substance in the human body.
61