The human brain doesn't stop developing until about 25 years old.
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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 about 1,400 different species of bacteria in your belly button.
10
In one day, adult lungs move about 10,000 litres of air.
11
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111