It takes approximately 12 hours for food to entirely digest.
93
The human brain is more active during sleep than during the day.
28
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
In one day, adult lungs move about 10,000 litres of air.
11
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
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